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2012-05-30
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Airworthiness Directives; the Boeing Company Airplanes
Proposed Rules
D09002ee1bdcb9a07
D09002ee1bdcb9a80
United States
Department of Transportation
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org
United States Government Agency or Subagency
United States
Federal Aviation Administration
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org
United States Government Agency or Subagency
We are revising an earlier proposed airworthiness directive (AD) for certain the Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes. That NPRM proposed to inspect for part numbers of the operational program software of the flight control computers, and corrective actions if necessary. That NPRM was prompted by reports of undetected erroneous output from a single radio altimeter channel, which resulted in premature autothrottle retard during approach. This action revises that NPRM by also proposing to supersede an existing AD. We are proposing this supplemental NPRM to detect and correct an unsafe condition associated with erroneous output from a radio altimeter channel, which could result in premature autothrottle landing flare retard and the loss of automatic speed control, and consequent loss of control of the airplane. Since the proposal to now supersede an existing AD may impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on this proposed change.
77 FR 31758
https://www.govinfo.gov/app/details/FR-2012-05-30/2012-13028
2012-13028
fr30my12-15
RIN 2120-AA64
4910-13-P
Docket No. FAA-2010-0856
Directorate Identifier 2010-NM-117-AD
https://www.govinfo.gov/app/details/FR-2012-05-30/2012-13028
https://www.govinfo.gov/content/pkg/FR-2012-05-30/html/2012-13028.htm
https://www.govinfo.gov/content/pkg/FR-2012-05-30/pdf/2012-13028.pdf
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
5 p.
31758
31762
77 FR 31758
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Regulation Identification Number 2120-AA64
RIN 2120-AA64
Airworthiness Directives; the Boeing Company Airplanes; Federal Register Vol. 77, Issue
PRORULE
2012-13028
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
2012-07-16
Docket No. FAA-2010-0856
Directorate Identifier 2010-NM-117-AD
4910-13-P
2012-13028
Supplemental notice of proposed rulemaking (NPRM); reopening of comment period.
We are revising an earlier proposed airworthiness directive (AD) for certain the Boeing Company Model 737-600, -700, -700C, -800, and -900 series airplanes. That NPRM proposed to inspect for part numbers of the operational program software of the flight control computers, and corrective actions if necessary. That NPRM was prompted by reports of undetected erroneous output from a single radio altimeter channel, which resulted in premature autothrottle retard during approach. This action revises that NPRM by also proposing to supersede an existing AD. We are proposing this supplemental NPRM to detect and correct an unsafe condition associated with erroneous output from a radio altimeter channel, which could result in premature autothrottle landing flare retard and the loss of automatic speed control, and consequent loss of control of the airplane. Since the proposal to now supersede an existing AD may impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on this proposed change.
We must receive comments on this supplemental NPRM by July 16, 2012.
Gregg Nesemeier, Senior Aerospace Engineer, Systems and Equipment Branch, ANM-130S, FAA, Seattle Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, Washington 98057-3356; phone: (425) 917-6479; fax: (425) 917-6590; email: gregg.nesemeier@faa.gov.
Air Transportation
Aircraft
Aviation Safety
Incorporation by Reference
Safety
Airworthiness Directives:
The Boeing Company Airplanes
,
9-ANM-Seattle-ACO-AMOC-Requests@faa.gov
gregg.nesemeier@faa.gov
me.boecom@boeing.com
http://www.regulations.gov
https://www.myboeingfleet.com
Federal Register
Vol. 77, no. 104
Office of the Federal Register, National Archives and Records Administration
2012-05-30
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266 p.
Table of Contents:
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f:fr30my12
https://www.govinfo.gov/app/details/FR-2012-05-30
https://www.govinfo.gov/content/pkg/FR-2012-05-30/pdf/FR-2012-05-30.pdf
https://www.govinfo.gov/content/pkg/FR-2012-05-30/xml/FR-2012-05-30.xml
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