[Federal Register Volume 69, Number 160 (Thursday, August 19, 2004)]
[Proposed Rules]
[Pages 51402-51404]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 04-18999]


 ========================================================================
 Proposed Rules
                                                 Federal Register
 ________________________________________________________________________
 
 This section of the FEDERAL REGISTER contains notices to the public of 
 the proposed issuance of rules and regulations. The purpose of these 
 notices is to give interested persons an opportunity to participate in 
 the rule making prior to the adoption of the final rules.
 
 ========================================================================
 

  Federal Register / Vol. 69, No. 160 / Thursday, August 19, 2004 / 
Proposed Rules  

[[Page 51402]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2003-SW-47-AD]
RIN 2120-AA64


Airworthiness Directives; Eurocopter France Model EC 155B and EC 
155B1 Helicopters

AGENCY: Federal Aviation Administration, DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: This document proposes adopting a new airworthiness directive 
(AD) for the specified Eurocopter France (Eurocopter) model 
helicopters. This proposal would require inspecting the chamfer of the 
stop on the cabin sliding doors (doors) and installing an airworthy 
stop if the chamfer exceeds a certain length; and prior to each flight, 
visually checking the door to determine if it is correctly locked in 
the open position before flying with the doors open, and checking the 
locking indicator light and the position of the door handles before 
flying with the doors closed. This document also proposes to revise the 
Limitations Section of the Rotorcraft Flight Manual (RFM) prohibiting 
the opening or closing of a cabin sliding door at airspeeds of 40 or 
greater knots indicated airspeed (KIAS). This proposal is prompted by a 
report of a door separating from a helicopter during flight. The 
actions specified by this proposed AD are intended to prevent 
separation of a door during flight and damage to the helicopter, 
resulting in a forced landing or loss of control of the helicopter.

DATES: Comments must be received on or before October 18, 2004.

ADDRESSES: Submit comments in triplicate to the Federal Aviation 
Administration (FAA), Office of the Regional Counsel, Southwest Region, 
Attention: Rules Docket No. 2003-SW-47-AD, 2601 Meacham Blvd., Room 
663, Fort Worth, Texas 76137. You may also send comments electronically 
to the Rules Docket at the following address: [email protected]. 
Comments may be inspected at the Office of the Regional Counsel between 
9 a.m. and 3 p.m., Monday through Friday, except Federal holidays.

FOR FURTHER INFORMATION CONTACT: Richard Monschke, Aviation Safety 
Engineer, FAA, Rotorcraft Directorate, Rotorcraft Standards Staff, Fort 
Worth, Texas 76193-0110, telephone (817) 222-5116, fax (817) 222-5961.

SUPPLEMENTARY INFORMATION:

Comments Invited

    Interested persons are invited to participate in the making of the 
proposed rule by submitting such written data, views, or arguments as 
they may desire. Communications should identify the Rules Docket number 
and be submitted in triplicate to the address specified above. All 
communications received on or before the closing date for comments will 
be considered before taking action on the proposed rule. The proposals 
contained in this document may be changed in light of the comments 
received.
    Comments are specifically invited on the overall regulatory, 
economic, environmental, and energy aspects of the proposed rule. All 
comments submitted will be available, both before and after the closing 
date for comments, in the Rules Docket for examination by interested 
persons. A report summarizing each FAA-public contact concerned with 
the substance of this proposal will be filed in the Rules Docket.
    Commenters wishing the FAA to acknowledge receipt of their mailed 
comments submitted in response to this proposal must submit a self-
addressed, stamped postcard on which the following statement is made: 
``Comments to Docket No. 2003-SW-47-AD.'' The postcard will be date 
stamped and returned to the commenter.

Discussion

    The Direction Generale De L'Aviation Civile (DGAC), the 
airworthiness authority for France, notified the FAA that an unsafe 
condition may exist on Model EC 155B and EC 155B1 helicopters. The DGAC 
advises that they have issued an AD following the loss in flight of a 
cabin sliding door.
    Eurocopter issued Alert Service Bulletin No. 52A015, dated 
September 8, 2003, which specified a modification (MOD 0753C48) to the 
micro switch support, and an adjustment to the micro switch to ensure 
lighting of the instrument panel ``DOORS'' light in the event of 
insufficient engagement of the cabin sliding door locking pin in its 
catch. The FAA did not mandate compliance with this alert service 
bulletin.
    Eurocopter has also issued Alert Telex No. 52A013, Revision 1, 
dated September 24, 2003, which specifies:
     Within the next 50 hours time-in-service (TIS), inspecting 
the length of the chamfer on the stop of the lower rail aft fitting of 
the cabin sliding doors;
     Prior to flight with a cabin sliding door open, visually 
checking that the door is correctly locked in the open position;
     Prior to flight with a cabin sliding door closed, checking 
that the locking indicator light on the instrument panel is off when 
the door is closed, and when locking the door, checking that the door 
handle is in the closed position; and
     While in flight, prohibiting the opening or closing of a 
cabin sliding door at airspeeds of 40 or greater KIAS.

The DGAC classified this alert telex as mandatory and issued AD No. F-
2003-345 R1, dated November 12, 2003, to ensure the continued 
airworthiness of these helicopters in France.
    These helicopter models are manufactured in France and are type 
certificated for operation in the United States under the provisions of 
14 CFR 21.29 and the applicable bilateral agreement. Pursuant to the 
applicable bilateral agreement, the DGAC has kept the FAA informed of 
the situation described above. The FAA has examined the findings of the 
DGAC, reviewed all available information, and determined that AD action 
is necessary for products of these type designs that are certificated 
for operation in the United States.
    The previously described unsafe condition is likely to exist or 
develop on other helicopters of the same type designs registered in the 
United States. Therefore, the proposed AD would require:
     Before further flight, revising the Limitations Section of 
the RFM to

[[Page 51403]]

prohibit opening or closing the cabin doors except at speeds of less 
than 40 KIAS.
     Within the next 50 hours TIS, inspecting the chamfer of 
the stop of the lower rail aft fitting of the doors, and if the chamfer 
is greater than 2mm in length, installing an airworthy stop;
     Prior to each flight with a door open, visually checking 
that the door is correctly locked in the open position; and
     Prior to flight with a door closed, checking that the 
locking indicator light on the instrument panel is ``off'' when the 
door is closed, that the door handles are in the correct closed 
position when the door is locked, and that the lower locking pin is 
correctly positioned in its catch. These closed-door checks are 
required until a chamfer that is 2mm or less in length is installed 
and, in accordance with MOD 0753C48, the mounting support plates are 
modified and the door micro-switches are adjusted.

The actions would be required to be accomplished in accordance with the 
alert telex described previously. The proposed AD would be an interim 
action until modified parts are developed. Additionally, if a door is 
opened or closed during flight, in accordance with the limitations of 
the RFM, the FAA anticipates that the appropriate crewmembers will 
assure that the door is properly secured.
    The owner/operator (pilot) holding at least a private pilot 
certificate may perform the visual checks required by paragraphs (c) 
and (d) of this proposed AD and must enter compliance with those 
paragraphs into the aircraft maintenance records in accordance with 14 
CFR 43.11 and 91.417(a)(2)(v). This proposed AD allows a pilot to 
perform these checks because they involve only visual checks to ensure 
that the cabin sliding doors are correctly locked in the open or closed 
position, and can be performed equally well by a pilot or a mechanic.
    The FAA estimates that this proposed AD would affect 3 helicopters 
of U.S. registry and the proposed actions would take approximately 1 
minute for each check on each helicopter, 2 work hours per helicopter 
to install 2 new stops, and 2 work hours to modify each helicopter in 
accordance with MOD 0753C48, at an average labor rate of $65 per work 
hour. Required parts would cost approximately $1,125 ($375 per 
helicopter). Based on these figures, we estimate the total cost impact 
of the proposed AD on U.S. operators to be $3,855 for the entire fleet, 
assuming 600 checks per helicopter, two stops are replaced on each 
helicopter, each helicopter is modified in accordance with MOD 0753C48, 
and the time to make the one-time revision to the RFM would be 
negligible.
    The regulations proposed herein would not have a substantial direct 
effect on the States, on the relationship between the national 
Government and the States, or on the distribution of power and 
responsibilities among the various levels of government. Therefore, it 
is determined that this proposal would not have federalism implications 
under Executive Order 13132.
    For the reasons discussed above, I certify that this proposed 
regulation (1) is not a ``significant regulatory action'' under 
Executive Order 12866; (2) is not a ``significant rule'' under the DOT 
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 
and (3) if promulgated, will not have a significant economic impact, 
positive or negative, on a substantial number of small entities under 
the criteria of the Regulatory Flexibility Act. A copy of the draft 
economic evaluation prepared for this action is contained in the Rules 
Docket. A copy of it may be obtained by contacting the Rules Docket at 
the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

    Accordingly, pursuant to the authority delegated to me by the 
Administrator, the Federal Aviation Administration proposes to amend 
part 39 of the Federal Aviation Regulations (14 CFR part 39) as 
follows:

PART 39--AIRWORTHINESS DIRECTIVES

    1. The authority citation for part 39 continues to read as follows:

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


Sec.  39.13  [Amended]

    2. Section 39.13 is amended by adding a new airworthiness directive 
to read as follows:

Eurocopter France: Docket No. 2003-SW-47-AD.

    Applicability: Model EC 155B and EC 155B1 helicopters with cabin 
sliding doors, part number (P/N) 365A82-1064-02 (left-hand door) and 
P/N 365A82-1064-03 (right-hand door) and stop, P/N 365A25-8085-21, 
installed, certificated in any category.
    Compliance: Required as indicated, unless accomplished 
previously.
    To prevent separation of a door during flight and damage to the 
helicopter, resulting in a forced landing or loss of control of the 
helicopter, accomplish the following:
    (a) Before further flight, revise the Limitations Section of the 
Rotorcraft Flight Manual (RFM) permitting the opening or closing of 
the cabin sliding doors only at speeds of less than 40 knots 
indicated airspeed.
    (b) Within 50 hours time-in-service, inspect the length of the 
chamfer on the stop of the lower rail aft fitting on each cabin 
sliding door (door), and if the chamfer is more than 2mm in length, 
install an airworthy stop in accordance with paragraph 2.B., 
Operational Procedure, of Eurocopter Alert Telex No. 52A013, 
Revision 1, dated September 24, 2003.

    Note 1: The inspection required by paragraph (b) of this AD has 
already been accomplished for all Model EC 155B1 helicopters prior 
to delivery.

    (c) Before each flight with a door open, check that each open 
door is locked in the ``open'' position with the upper roller in its 
rail and the door open locking latch engaged.
    (d) Before each flight with a door closed, check that:
    (1) The locking indicator light on the instrument panel is 
``off,''
    (2) The door handle is in the correct ``closed'' position, and
    (3) The lower locking pin is positioned in its catch.

    Note 2: If the door is correctly closed and latched, when viewed 
from the outside, the door handle will be flush with the profile of 
the housing and the aft lower corner of the door will be flush with 
the profile of the fuselage; when viewed from the inside, the door 
handle will be positioned opposite the locking indicator with no gap 
between the structure seal and the aft lower sealing surface of the 
door.


    Note 3: If the door is closed and the lower locking pin is 
outside its catch, when viewed from the outside, the aft lower 
corner of the door is approximately 15 to 20mm from the fuselage; 
when viewed from the inside, the aft lower corner of the door is 
approximately 10 to 15mm from the fuselage.

    (e) An owner/operator (pilot) holding at least a private pilot 
certificate may perform the visual checks required by paragraphs (c) 
and (d) of this AD and must enter compliance with those paragraphs 
into the aircraft maintenance records in accordance with 14 CFR 
43.11 and 91.417(a)(2)(v).
    (f) After the stops of the lower rail aft fitting with a chamfer 
2mm or less in length are installed and in accordance with MOD 
0753C48, the mounting plate supports are modified and the door 
micro-switches are adjusted, the checks required by paragraph (d) of 
this AD are no longer required.
    (g) To request a different method of compliance or a different 
compliance time for this AD, follow the procedures in 14 CFR 39.19. 
Contact the Safety Management Group, Rotorcraft Directorate, FAA, 
for information about previously approved alternative methods of 
compliance.

    Note 4: The subject of this AD is addressed in Direction 
Generale De L'Aviation Civile (France) AD No. F-2003-345-R1, dated 
November 12, 2003.



[[Page 51404]]


    Issued in Fort Worth, Texas, on August 6, 2004.
David A. Downey,
Manager, Rotorcraft Directorate, Aircraft Certification Service.
[FR Doc. 04-18999 Filed 8-18-04; 8:45 am]
BILLING CODE 4910-13-P