United States Government Publishing Office
publisher
pbl
distributor
dst
United States
National Archives and Records Administration
Office of the Federal Register
author
aut
Government Organization
text
government publication
eng
FR
Regulatory Information
1995_register
executive
2010-09-25
article
Airworthiness Directives; Boeing Model 747SP Series Airplanes
Proposed Rules
D09002ee1be065df2
D09002ee1be065e80
United States
Department of Transportation
originator
org
United States Government Agency or Subagency
United States
Federal Aviation Administration
originator
org
United States Government Agency or Subagency
This document revises an earlier proposed airworthiness directive (AD), applicable to certain Boeing Model 747SP series airplanes, that would have superseded an existing AD to require inspections to detect cracks in the web of the wing front spar, and modification, if necessary. That proposal was prompted by a report of cracking in the web in an area outside the inspection zone specified in the existing AD. A crack in the web that is not detected before it extends outside the chord footprints can allow fuel leakage. This action revises the proposed rule by reducing the compliance time for inspections of certain airplanes. The actions specified by this proposed AD are intended to prevent fuel leakage onto an engine and a resultant fire due to cracking in the web of the wing front spar.
60 FR 9645
https://www.govinfo.gov/app/details/FR-1995-02-21/95-4122
95-4122
fr21fe95-22
4910-13-U
Docket No. 94-NM-120-AD
https://www.govinfo.gov/app/details/FR-1995-02-21/95-4122
https://www.govinfo.gov/content/pkg/FR-1995-02-21/html/95-4122.htm
https://www.govinfo.gov/content/pkg/FR-1995-02-21/pdf/95-4122.pdf
3 p.
9645
9647
60 FR 9645
Code of Federal Regulations
Title 14 Part 39
14 CFR Part 39
Airworthiness Directives; Boeing Model 747SP Series Airplanes; Federal Register Vol. 60, Issue
PRORULE
95-4122
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
1995-03-07
Docket No. 94-NM-120-AD
4910-13-U
95-4122
Supplemental notice of proposed rulemaking; reopening of comment period.
This document revises an earlier proposed airworthiness directive (AD), applicable to certain Boeing Model 747SP series airplanes, that would have superseded an existing AD to require inspections to detect cracks in the web of the wing front spar, and modification, if necessary. That proposal was prompted by a report of cracking in the web in an area outside the inspection zone specified in the existing AD. A crack in the web that is not detected before it extends outside the chord footprints can allow fuel leakage. This action revises the proposed rule by reducing the compliance time for inspections of certain airplanes. The actions specified by this proposed AD are intended to prevent fuel leakage onto an engine and a resultant fire due to cracking in the web of the wing front spar.
Comments must be received by March 7, 1995.
Tim Backman, Aerospace Engineer, Airframe Branch, ANM-120S, FAA, Transport Airplane Directorate, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 227-2776; fax (206) 227-1181.
Federal Register
Vol. 60, no. 34
Office of the Federal Register, National Archives and Records Administration
1995-02-21
continuing
daily
deposited
born digital
188 p.
Table of Contents:
AE 2.7:
GS 4.107:
AE 2.106:
KF70.A2
https://www.govinfo.gov/app/details/FR-1995-02-21
P0b002ee180a8a2bb
0097-6326
0042-1219
0364-1406
769-004-00000-9
000582072
f:fr21fe95
https://www.govinfo.gov/app/details/FR-1995-02-21
https://www.govinfo.gov/content/pkg/FR-1995-02-21/pdf/FR-1995-02-21.pdf
fdlp
9595
9771
DGPO
2010-09-25
2023-05-07
FR-1995-02-21
machine generated
eng
FR
FR-1995-02-21
60
34