[Federal Register Volume 71, Number 189 (Friday, September 29, 2006)]
[Rules and Regulations]
[Pages 57398-57403]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E6-15868]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 25

[Docket No. NM353; Special Conditions No. 25-332-SC]


Special Conditions: Boeing Model 767-300 Series Airplanes; 
Forward Lower Lobe Crew Rest Module (CRM)

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final special conditions; request for comments.

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SUMMARY: These special conditions are issued for Boeing Model 767-300 
series airplanes. These airplanes, modified by TIMCO Aviation Services, 
Inc. (TIMCO), will have a novel or unusual design feature associated 
with a forward lower lobe crew rest module (CRM). The applicable 
airworthiness regulations do not contain adequate or appropriate safety 
standards for this design feature. These special conditions contain the 
additional safety standards that the Administrator considers necessary 
to establish a level of safety equivalent to that established by the 
existing airworthiness standards.

DATES: Effective Date: The effective date for these special conditions 
is September 11, 2006 We must receive any comments by November 13, 
2006.

ADDRESSES: Please mail two copies of your comments to: Federal Aviation 
Administration, Transport Airplane Directorate, Attention: Rules Docket 
(ANM-113), Docket No. NM353, 1601 Lind Avenue, SW., Renton, Washington 
98057-3356. You may deliverer two copies to the Transport Airplane 
Directorate at the same address. You must mark your comments: Docket 
No. NM353. You can inspect comments in the Rules Docket weekdays, 
except Federal holidays, between 7:30 a.m. and 4 p.m.

FOR FURTHER INFORMATION CONTACT: Jayson Claar, FAA, Airframe/Cabin 
Safety Branch, ANM-115, Transport Airplane Directorate, Aircraft 
Certification Service, 1601 Lind Avenue, SW., Renton, Washington, 
98057-3356; telephone (425) 227-2194; facsimile (425) 227-1320.

SUPPLEMENTARY INFORMATION:

Comments Invited

    The FAA has determined that notice and opportunity for prior public 
comment is impracticable, because these procedures would significantly 
delay certification and thus delivery of the affected airplanes. In 
addition, the substance of these special conditions has been subject to 
the public comment process in several prior instances with no comments 
received. The FAA, therefore, finds that good cause exists for making 
these special conditions effective upon issuance; however, we invite 
interested people to take part in this rulemaking by sending written 
comments, data, or views. The most helpful comments reference a 
specific portion of the special conditions, explain the reason for any 
recommended change, and include supporting data. We ask that you send 
us two copies of written comments.
    We will file in the docket all comments we receive as well as a 
report summarizing each substantive public contact with FAA personnel 
concerning these special conditions. You may inspect the docket before 
and after the comment closing date. If you wish to review the docket in 
person, go to the address in the ADDRESSES section of this preamble 
between 7:30 a.m. and 4 p.m., Monday through Friday, except Federal 
holidays.
    We will consider all comments we receive on or before the closing 
date for comments. We will consider comments filed late, if it is 
possible to do so without incurring expense or delay. We may change 
these special conditions, based on the comments we receive.
    If you want the FAA to acknowledge receipt of your comments on 
these special conditions, include with your comments a pre-addressed, 
stamped postcard on which the docket number appears. We will stamp the 
date on the postcard and mail it back to you.

Background

    On January 24, 2006, TIMCO Aviation Services, Inc. (TIMCO) applied 
for a supplemental type certificate to permit installation of a forward 
lower lobe crew rest module (CRM) in Boeing 767-300 series airplanes.
    The CRM will be a one-piece, self-contained unit to be installed 
under the passenger cabin floor in the aft portion of the forward cargo 
compartment. It will be mounted on a pallet compatible with the 
existing cargo loading system and may be easily installed or removed 
from the aircraft. The CRM will be occupied only in flight--not during 
taxi, takeoff, or landing--and no more than six crewmembers may occupy 
it at a time. The module will have an approved berth able to withstand 
the maximum flight loads for each occupant permitted in it and will 
contain a smoke detection system, a fire-extinguishing system, an 
oxygen system, and occupant amenities.
    The CRM requires two entry hatches in the main deck area. The floor 
structure will be modified to provide access for the main entry hatch 
and the emergency access hatch.

Type Certification Basis

    Under the provisions of Sec.  21.101, TIMCO must show that Boeing 
Model 767-300 series airplanes with the CRM continue to meet either:
    (1) The applicable provisions of the regulations incorporated by 
reference in Type Certificate No. A1NM, or
    (2) The applicable regulations in effect on the date of TIMCO's 
application for the change.
    The regulations incorporated by reference in the type certificate 
are commonly referred to as the ``original type certification basis.'' 
The certification basis for Boeing Model 767-300 series airplanes is 14 
CFR part 25, as amended by Amendments 25-1 through 25-37. Refer to Type 
Certificate No. A1NM for a complete description of the certification 
basis for this model.
    According to 14 CFR 21.16, if the Administrator finds that the 
applicable airworthiness regulations do not contain adequate or 
appropriate safety standards for the Boeing Model 767-300 series 
airplanes because of a novel or unusual design feature, she or he 
prescribes special conditions for the airplane.

[[Page 57399]]

    As defined in 14 CFR 11.19, special conditions are issued in 
accordance with 14 CFR 11.38 and become part of the type certification 
basis in accordance with 14 CFR 21.101.
    Special conditions are initially applicable to the model for which 
they are issued. If the type certificate for that model is amended to 
include any other model that incorporates the same or similar novel or 
unusual design feature, the special conditions would also apply to that 
model. Similarly, if any other model already included on the same type 
certificate is modified to incorporate the same or similar novel or 
unusual design feature, the special conditions would apply to that 
other model under the provisions of 14 CFR 21.101.
    In addition to the applicable airworthiness regulations and special 
conditions, Boeing Model 767-300 series airplanes must comply with the 
fuel vent and exhaust emission requirements of 14 CFR part 34 and the 
noise certification requirements of 14 CFR part 36.

Novel or Unusual Design Features

    While installation of a CRM is not a new concept for large 
transport category airplanes, each module has unique features based on 
its design, location, and use. The CRM to be installed on the Boeing 
Model 767-300 series airplanes is novel in that
    (1) It will be located below the passenger cabin floor in the aft 
portion of the forward cargo compartment, and
    (2) It has a maintenance door, which allows access to and from the 
cargo compartment.
    Because of the novel or unusual features associated with the 
installation of a CRM, special conditions are considered necessary to 
provide a level of safety equal to that established by the 
airworthiness regulations incorporated by reference in the type 
certificates of these airplanes. These special conditions do not negate 
the need to address other applicable part 25 regulations.

Operational Evaluations and Approval

    These special conditions specify requirements for design approvals 
(i.e., type design changes and supplemental type certificates) of CRMs 
administered by the FAA's Aircraft Certification Service. The FAA's 
Flight Standards Service, Aircraft Evaluation Group, must evaluate and 
approve the ``basic suitability'' of the CRM for occupation by 
crewmember before the module may be used. If an operator wishes to use 
a CRM as ``sleeping quarters,'' the module must undergo an additional 
operational evaluation and approval. The Aircraft Evaluation Group 
would evaluate the CRM for compliance to Sec. Sec.  121.485(a) and 
121.523(b), with Advisory Circular 121-31, Flight Crew Sleeping 
Quarters and Rest Facilities, providing one method of compliance to 
these operational regulations.
    To obtain an operational evaluation, the supplemental type design 
holder must contact the Aircraft Evaluation Group within the Flight 
Standards Service which has operational approval authority for the 
project. In this instance, it is the Seattle Aircraft Evaluation Group. 
The supplemental type design holder must request a ``basic 
suitability'' evaluation or a ``sleeping quarters'' evaluation of the 
crew rest module. The supplemental type design holder may make this 
request concurrently with the demonstration of compliance with these 
special conditions.
    The Boeing Model 767-300 Flight Standardization Board Report 
Appendix will document the results of these evaluations. In discussions 
with the FAA Principal Operating Inspector, individual operators may 
refer to these standardized evaluations as the basis for an operational 
approval, instead of an on-site operational evaluation.
    Any change to the approved CRM configuration requires an 
operational re-evaluation and approval, if the change affects any of 
the following:
     Procedures for emergency egress of crewmembers,
     Other safety procedures for crewmembers occupying the CRM, 
or
     Training related to these procedures.
    The applicant for any such change is responsible for notifying the 
Seattle Aircraft Evaluation Group that a new evaluation of the CRM is 
required.
    All instructions for continued airworthiness, including service 
bulletins, must be submitted to the Seattle Aircraft Evaluation Group 
for approval before the FAA approves the modification.

Discussion of Proposed Special Conditions No. 9 and 12

    The following clarifies the intent of proposed Special Condition 
No. 9 relative to the requirements of Sec.  25.1439(a):
    Amendment 25-38 modified the requirements of Sec.  25.1439(a) by 
adding,

    ``In addition, protective breathing equipment must be installed 
in each isolated separate compartment in the airplane, including 
upper and lower lobe galleys, in which crewmember occupancy is 
permitted during flight for the maximum number of crewmembers 
expected to be in the area during any operation.''

    The CRM is an isolated, separate compartment, so Sec.  25.1439(a) 
is applicable. However, the requirements of Sec.  25.1439(a) for 
protective breathing equipment in isolated, separate compartments are 
not appropriate, because the CRM is novel and unusual in terms of the 
number of occupants.
    In 1976 when Amendment 25-38 was adopted, small galleys were the 
only isolated, separate compartments that had been certificated. Two 
crewmembers were the maximum expected to occupy those galleys.
    These special conditions address a CRM which can accommodate up to 
six crewmembers. This number of occupants in an isolated, separate 
compartment was not envisioned at the time Amendment 25-38 was adopted. 
It is not appropriate for all occupants to don protective breathing 
equipment in the event of a fire, because the first action should be 
for each occupant to leave the confined space, unless that occupant is 
fighting the fire. Taking the time to don protective breathing 
equipment would prolong the time for the emergency evacuation of the 
occupants and possibly interfere with efforts to extinguish the fire.
    In regard to proposed Special Condition No. 12, the FAA considers 
that during the 1-minute smoke detection time, penetration of a small 
quantity of smoke from the this forward lower lobe CRM into an occupied 
area of the airplane would be acceptable, given the limitations in 
these special conditions. The FAA considers that the special conditions 
place sufficient restrictions on the quantity and type of material 
allowed in crew carry-on bags that the threat from a fire in the remote 
CRM would be equivalent to the threat from a fire in the main cabin.

Applicability

    As discussed above, these special conditions are applicable to 
Boeing Model 767-300 series airplanes as modified by TIMCO to include a 
forward lower lobe CRM. If TIMCO applies at a later date for a change 
to the supplemental type certificate to include another model listed on 
the same type certificate data sheet which incorporates the same or 
similar novel or unusual design feature, these special conditions would 
also apply to that model.

Conclusion

    This action affects only certain novel or unusual design features 
on Boeing Model 767-300 series airplanes. It is not a rule of general 
applicability, and it affects only the applicant which applied to the 
FAA for approval of these features on the airplane.

[[Page 57400]]

List of Subjects in 14 CFR Part 25

    Aircraft, Aviation safety, Reporting and recordkeeping 
requirements.

0
The authority citation for these special conditions is as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701, 44702, 44704.

The Special Conditions

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the following special conditions are issued as part of 
the type certification basis for the Boeing Model 767-300 series 
airplanes, modified by TIMCO.
    1. Occupancy of the forward lower lobe crew rest module (CRM) is 
limited to the total number of installed bunks and seats in each 
module. There must be an approved seat or berth able to withstand the 
maximum flight loads when occupied for each occupant permitted in the 
CRM. The maximum occupancy in the CRM is six.
    (a) There must be appropriate placard(s) displayed in a conspicuous 
place at each entrance to the CRM to indicate the following:
    (1) The maximum number of occupants;
    (2) Occupancy is restricted to crewmembers who are trained in 
evacuation procedures for the CRM;
    (3) Occupancy is prohibited during taxi, take-off and landing;
    (4) Smoking is prohibited in the CRM;
    (5) Hazardous quantities of flammable fluids, explosives, or other 
dangerous cargo are prohibited in the CRM.
    (6) Stowage in the CRM must be limited to emergency equipment, 
airplane-supplied equipment (e.g., bedding), and crew personal luggage. 
Cargo or passenger baggage is not allowed.
    (b) There must be at least one ashtray located conspicuously on or 
near the entry side of any entrance to the CRM.
    (c) There must be a means to prevent passengers from entering the 
CRM in the event of an emergency or when no flight attendant is 
present.
    (d) There must be a means for any door installed between the CRM 
and the passenger cabin to be opened quickly from inside the module, 
even when crowding occurs at each side of the door.
    (e) For all doors installed in the evacuation routes, there must be 
a means to prevent anyone from being trapped inside the module. If a 
locking mechanism is installed, it must be capable of being unlocked 
from the outside without the aid of special tools. The lock must not 
prevent opening from the inside of the module at any time.
    2. There must be at least two emergency evacuation routes, each of 
which can be used by each occupant of the CRM to rapidly evacuate to 
the main cabin. The exit door/hatch for each route must be able to be 
closed from the main cabin after evacuation of the CRM. In addition--
    (a) The routes must be located with one at each end of the module 
or with two having sufficient separation within the module and between 
the routes to minimize the possibility of an event (either inside or 
outside the CRM) rendering both routes inoperative.
    (b) The routes must minimize the possibility of blockage which 
might result from fire, mechanical or structural failure or from 
persons standing on top of or against the escape route. If an 
evacuation route uses an area where normal movement of passengers 
occurs, it must be demonstrated that passengers would not impede egress 
to the main deck. If a hatch is installed in an evacuation route, the 
point at which the evacuation route terminates in the passenger cabin 
should not be located where normal movement by passengers or crew 
occurs. Examples include the main aisle, cross aisle, passageway, or 
galley complex. If it is not possible to avoid such a location there 
must be a means of ensuring that the hatch or door can be opened when a 
person, the weight of a ninety-fifth percentile male, is standing on 
the hatch or door. The use of evacuation routes must not depend on any 
powered device. If there is low headroom at or near an evacuation 
route, there must be provisions to prevent or to protect occupants of 
the CRM from head injury.
    (c) There must be emergency evacuation procedures, including 
procedures for the emergency evacuation of an incapacitated occupant 
from the crew rest module. All of these procedures must be transmitted 
to all operators for incorporation into their training programs and 
appropriate operational manuals.
    (d) There must be a limitation in the Airplane Flight Manual or 
other suitable means of requiring training in the use of evacuation 
routes for the crewmembers.
    3. There must be a means for the evacuation of an incapacitated 
person representative of a 95th percentile male from the CRM to the 
passenger cabin floor. The evacuation must be demonstrated for all 
evacuation routes. A flight attendant or other crewmember (a total of 
one assistant within the CRM) may provide assistance in the evacuation. 
Up to three persons in the main passenger compartment may provide 
additional assistance. For evacuation routes having stairways, the 
additional assistants may descend to one half the elevation change from 
the main deck to the lower deck compartment or to the first landing, 
whichever is higher.
    4. The following signs and placards must be provided in the CRM:
    (a) At least one exit sign located near each exit which meets the 
requirements of Sec.  25.812(b)(1)(i) at Amendment 25-58. However, the 
exit sign may have a reduced background area of no less than 5.3 square 
inches (excluding the letters), provided that it is installed so that 
the material surrounding the exit sign is light in color (e.g., white, 
cream or light beige). If the material surrounding the exit sign is not 
light in color, an exit sign with a minimum of a one-inch wide 
background border around the letters would also be acceptable.
    (b) An appropriate placard located near each exit, defining the 
location and the operating instructions for each evacuation route;
    (c) Placards must be readable from a distance of 30 inches under 
emergency lighting conditions; and
    (d) The exit handles and placards for each evacuation route (see 
4.(b) above) must be illuminated to at least 160 micro lamberts under 
emergency lighting conditions.
    5. In the event of failure of the airplane's main power system or 
of the normal lighting system for the CRM, there must be a means to 
automatically provide emergency illumination to the CRM.
    (a) This emergency illumination must be independent of the main 
lighting system.
    (b) The sources of general cabin illumination may be common to both 
the emergency and the main lighting systems, if the power supply to the 
emergency lighting system is independent of the power supply to the 
main lighting system.
    (c) The illumination level must be sufficient for the occupants of 
the CRM to locate and transfer to the main passenger cabin floor by 
means of each evacuation route.
    (d) If the privacy curtains are in the closed position, the 
illumination level must be sufficient for each occupant of the CRM to 
locate a deployed oxygen mask.
    6. There must be means for two-way voice communications between 
crewmembers on the flightdeck and occupants of the CRM. There must also 
be public address system microphones at each flight attendant seat 
which is required to be near a floor level exit in the passenger cabin 
per Sec.  25.785(h) at Amendment 25-51. The public address system must 
allow two-way voice

[[Page 57401]]

communications between flight attendants and the occupants of the CRM. 
However, one microphone may serve more than one exit, if the proximity 
of the exits allows unassisted verbal communication between seated 
flight attendants.
    7. There must be a means for manual activation of an aural 
emergency alarm system, audible during normal and emergency conditions, 
to enable crewmembers on the flightdeck and at each pair of required 
floor level emergency exits to alert occupants of the CRM of an 
emergency situation. Use of a public address or crew interphone system 
will be acceptable, provided it has an adequate means of 
differentiating between normal and emergency communications. The system 
must be powered in flight for at least ten minutes after the shutdown 
or failure of all engines and auxiliary power units or the 
disconnection or failure of all power sources which depend on the 
continued operation of the engines and auxiliary power units.
    8. There must be a means, readily detectable by seated or standing 
occupants of the CRM, of indicating when the occupants must fasten 
their seat belts. In the event there are no seats, there must be at 
least one means to address anticipated turbulence (e.g., sufficient 
handholds). Seat belt type restraints must be provided for berths and 
must be compatible for the sleeping attitude during cruise conditions. 
There must be a placard on each berth requiring that seat belts be 
fastened when the berth is occupied. If compliance with any of the 
other requirements of these special conditions is predicated on 
specific head location, there must be a placard identifying the head 
position.
    9. In lieu of the requirements specified in Sec.  25.1439(a) at 
Amendment 25-38 that pertain to isolated compartments and to provide a 
level of safety equivalent to that which is provided occupants of a 
small, isolated galley, the following equipment must be provided in the 
CRM:
    (a) At least one approved hand-held fire extinguisher appropriate 
for the kinds of fires likely to occur;
    (b) Protective breathing equipment approved to Technical Standard 
Order (TSO)-C116 (or equivalent) suitable for fire fighting for at 
least two persons. If there are three or more hand-held fire 
extinguishers, there must be protective breathing equipment for one 
person for each hand-held fire extinguisher; and
    (c) One flashlight.

    Note: Additional protective breathing equipment and fire 
extinguishers in specific locations (beyond the minimum numbers 
prescribed in Special Condition No. 9) may be required as a result 
of any egress analysis accomplished to satisfy Special Condition No. 
2(a).

    10. There must be a smoke or fire detection system (or systems) to 
monitor each occupiable area within the CRM, including areas 
partitioned by curtains. Flight tests must be conducted to show 
compliance with this requirement. Each system (or systems) must provide 
the following:
    (a) A visual indication to the flightdeck within one minute after 
the start of a fire;
    (b) An aural warning in the CRM; and
    (c) A warning in the main passenger cabin. This warning must be 
readily detectable by a flight attendant, taking into consideration the 
positioning of flight attendants throughout the main passenger 
compartment during various phases of flight.
    11. The CRM must be designed so that fires within the CRM can be 
controlled without a crewmember entering the module or so that 
crewmembers equipped for fire fighting have unrestricted access to the 
module. The time for a crewmember on the main deck to react to the fire 
alarm, don protective gear (such as protective breathing equipment and 
gloves), obtain fire-fighting equipment, and gain access to the module 
must not exceed the time for the module to become smoke-filled, making 
it difficult to locate the fire source.
    12. There must be a means to exclude hazardous quantities of smoke 
or extinguishing agent originating in the CRM from entering any other 
compartment occupied by crewmembers or passengers. Smoke entering any 
other compartment occupied by crewmembers or passengers when the 
entrance to the CRM is opened during an emergency evacuation must 
dissipate within five minutes after the entrance to the module is 
closed. Hazardous quantities of smoke may not enter any other 
compartment occupied by crewmembers or passengers during subsequent 
access to manually fight a fire in the CRM. (The amount of smoke 
entrained by a firefighter exiting the module through the access is not 
considered hazardous). During the 1 minute smoke detection time, 
penetration of a small quantity of smoke from the CRM into an occupied 
area is acceptable. Flight tests must be conducted to show compliance 
with this requirement.
    If a built-in fire extinguishing system is used instead of manual 
fire fighting, the fire extinguishing system must be designed so that 
no hazardous quantities of extinguishing agent will enter other 
compartments occupied by passengers or crew. The system must have 
adequate capacity to suppress any fire occurring in the CRM, 
considering the fire threat, the volume of the module, and the 
ventilation rate.
    13. There must be a supplemental oxygen system equivalent to that 
provided for main deck passengers for each seat and berth in the CRM. 
The system must provide aural and visual signals to warn the occupants 
of the module to don oxygen masks in the event of decompression. The 
warning must activate before the cabin pressure altitude exceeds 15,000 
feet and must sound continuously for a minimum of five minutes or until 
a reset push button in the CRM is depressed. Procedures for occupants 
of the CRM to follow in the event of decompression must be established. 
These procedures must be transmitted to the operators for incorporation 
into their training programs and appropriate operational manuals.
    14. The following requirements apply to CRMs that are divided into 
several sections by curtains or partitions:
    (a) To warn sleeping occupants, there must be an aural alert that 
can be heard in each section of the CRM and that accompanies automatic 
presentation of supplemental oxygen masks. In each section where seats 
or berths are not installed, there must be a visual indicator that 
occupants must don oxygen masks. A minimum of two supplemental oxygen 
masks is required for each seat or berth. There must also be a means by 
which crewmembers can manually deploy the oxygen masks from the 
flightdeck.
    (b) There must be a placard adjacent to each curtain that visually 
divides or separates the CRM into small sections for privacy. The 
placard must specify that the curtain remains open when the private 
section it creates is unoccupied.
    (c) For each section of the CRM created by a curtain, the following 
requirements of these special conditions apply both with the curtain 
open and with the curtain closed:
    (1) Emergency illumination (Special Condition No. 5);
    (2) Emergency alarm system (Special Condition No. 7);
    (3) Seat belt fasten signal (see Special Condition No. 8) or return 
to seat signal, as applicable; and
    (4) The smoke or fire detection system (Special Condition No. 10).
    (d) Crew rest modules visually divided to the extent that 
evacuation could be affected must have exit signs that direct occupants 
to the primary stairway exit. There must be exit signs in each separate 
section of the CRM

[[Page 57402]]

which meet the requirements of Sec.  25.812(b)(1)(i) at Amendment 25-
58. An exit sign with reduced background area as described in Special 
Condition No. 4(a) may be used to meet this requirement.
    (e) For sections within a CRM that are created by a partition with 
a door separating the sections, the following requirements of these 
special conditions must be met both with the door open and with the 
door closed:
    (1) There must be a secondary evacuation route from each section to 
the maindeck. Alternatively, any door between the sections must 
preclude anyone from being trapped inside the compartment. Removal of 
an incapacitated occupant within this area must be considered. A 
secondary evacuation route from a small room designed for only one 
occupant for a short time, such as a changing area or lavatory, is not 
required. However, removal of an incapacitated occupant within this 
area must be considered.
    (2) Any door between the sections must be openable when crowded 
against, even when crowding occurs at each side of the door.
    (3) There may be no more than one door between any seat or berth 
and the primary stairway exit.
    (4) There must be exit signs in each section which meet the 
requirements of Sec.  25.812(b)(1)(i) at Amendment 25-58 that direct 
occupants to the primary stairway exit. An exit sign with reduced 
background area, as described in Special Condition No. 4(a), may be 
used to meet this requirement.
    (5) The following Special Conditions apply both with the door open 
and with the door closed
     Special Conditions No. 5 (emergency illumination),
     No. 7 (emergency alarm system),
     No. 8 (fasten seat belt signal or return to seat signal, 
as applicable) and
     No. 10 (smoke or fire detection system) must be met.
    (6) Special Conditions No. 6 (two-way voice communication) and No. 
9 (emergency fire fighting and protective equipment) apply 
independently for each separate section, except for lavatories or other 
small areas that are not occupied for extended periods of time.
    15. Each waste disposal receptacle must have a built-in fire 
extinguisher which discharges automatically upon occurrence of a fire 
in the receptacle.
    16. Materials (including finishes or decorative surfaces applied to 
the materials) must comply with the flammability requirements of Sec.  
25.853 at Amendment 25-72 and mattresses must comply with the 
flammability requirements of Sec.  25.853(b) and (c) at Amendment 25-
72.
    17. All lavatories within the CRM must meet the requirements for a 
lavatory installed on the main deck, except with regard to Special 
Condition No. 10 for smoke detection.
    18. When a CRM is installed or enclosed as a removable module in 
part of a cargo compartment or is located directly adjacent to a cargo 
compartment without an intervening cargo compartment wall, the 
following apply:
    (a) Any wall of the module which forms part of the boundary of the 
reduced cargo compartment subject to direct flame impingement from a 
fire in the cargo compartment and which includes any interface between 
the module and the airplane structure or systems must meet the 
applicable requirements of Sec.  25.855 at Amendment 25-72.
    (b) When the CRM is not installed, the fire protection level of the 
cargo compartment must comply with the following regulations:
     Sec.  25.855 at Amendment 25-72,
     Sec.  25.857 at Amendment 25-60, and
     Sec.  25.858 at Amendment 25-54.
    (c) Use of each emergency evacuation route must not require 
occupants of the CRM to enter the cargo compartment in order to return 
to the passenger compartment.
    (d) The aural warning in Special Condition No. 7 must sound in the 
CRM.
    19. During all airplane flight operations, there must be means to 
prevent access into the Class C cargo compartment and to ensure that 
the maintenance door is closed.
    20. All enclosed stowage compartments within the CRM that are not 
limited to stowage of emergency equipment or airplane-supplied 
equipment (e.g., bedding) must meet the design criteria given in the 
table below. As indicated by the table, this special condition does not 
address enclosed stowage compartments with an interior volume greater 
than 200 cubic feet. (Fire protection for such large stowage 
compartments would necessitate design requirements and operational 
procedures similar to those for Class C cargo compartments.)

--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                              Stowage compartment interior volumes
       Fire Protection Features       ------------------------------------------------------------------------------------------------------------------
                                                Less than 25 ft \3\                   25 ft\3\ to 57 ft \3\                57 ft \3\ to 200 ft \3\
--------------------------------------------------------------------------------------------------------------------------------------------------------
Materials of Construction \1\........  Yes..................................  Yes.................................  Yes.
Detectors \2\........................  No...................................  Yes.................................  Yes.
Liner \3\............................  No...................................  No..................................  Yes.
Locating Device \4\..................  No...................................  Yes.................................  Yes.
--------------------------------------------------------------------------------------------------------------------------------------------------------
\1\ Material
The material used to construct each enclosed stowage compartment must at least be fire resistant and must meet the flammability standards for interior
  components specified in Sec.   25.853. For compartments with an interior volume less than 25 cubic feet, the design must contain a fire likely to
  occur within the compartment under normal use.
\2\ Detectors
Enclosed stowage compartments equal to or exceeding 25 cubic feet in interior volume must have a smoke or fire detection system to ensure that a fire
  can be detected within one minute. Flight tests must be conducted to show compliance with this requirement. Each system (or systems) must provide the
  following:
(a) A visual indication in the flightdeck within one minute after the start of a fire;
(b) An aural warning in the CRM; and
(c) A warning in the main passenger cabin. This warning must be readily detectable by a flight attendant, taking into account the location of flight
  attendants throughout the main passenger compartment during various phases of flight.
\3\ Liner
If the material used to construct the stowage compartment meets the flammability requirements of a liner for a Class B cargo compartment, then no liner
  would be required for enclosed stowage compartments equal to or greater than 25 cubic feet but less than 57 cubic feet in interior volume. For those
  enclosed stowage compartments whose interior volume is equal to or greater than 57 cubic feet but less than or equal to 200 cubic feet, the liner must
  meet the requirements of Sec.   25.855 at Amendment 25-72 for a class B cargo compartment.
\4\ Location Detector

[[Page 57403]]

 
Crew rest areas which contain enclosed stowage compartments whose interior volume exceeds 25 cubic feet and which are located away from one central
  location, such as the entry to the crew rest module or a common area within the crew rest module, would require additional fire protection devices to
  assist the firefighter in determining the location of a fire.


    Issued in Renton, Washington, on September 11, 2006.
Kevin Mullin,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. E6-15868 Filed 9-28-06; 8:45 am]
BILLING CODE 4910-13-P