89-09-06 BRITISH AEROSPACE: Amendment 39-6193.
Applicability: All Model BAC 1-11 200 and 400 series airplanes, on which British Aerospace (BAe) main landing gear support structure Modification PM3070 is installed and Modification PM5928 has not been installed, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent collapse of a main landing gear, accomplish the following:
A. Perform initial and repetitive ultrasonic and eddy current inspections of the main landing gear support beams at initial times and repetitive intervals shown in Table I of this AD using procedures in BAe Alert Service Bulletin 57-A-PM6000, Issue 2, dated February 17, 1988.
TABLE I
Airplane
Identification
Modification
PM6000
Accomplishment
Status
Initial Inspection
Compliance Time
Repetitive
Compliance
Time Interval After
Initial Inspection
Serial
Numbers up to
and including
402
Not Accomplished
Whichever occurs
later: -within
300 landings after
July 30, 1987, (the
effective date of
AD 87-13-03,
Amendment 39-5654);
or -within 3 years
since installation
of new left and
right main support beams.
Ultrasonic
inspection:
at intervals
not to exceed
12 months.
Eddy current
inspections:
at intervals
not to exceed
36 months.
Airplane
Identification
Modification
PM6000
Accomplishment
Status
Initial Inspection
Compliance Time
Repetitive
Compliance
Time Interval
After Initial
Inspection
Serial
Numbers 403
and subsequent
Not Accomplished
Whichever occurs
later: -within the
next 300 landings
after July 30, 1987
(the effective date
AD 87-13-03
Amendment 39-5654);
or -within 6 years
since new; or
-within 6 years
since installation
of new left and
right main support
beams.
Ultrasonic
inspections:
at intervals
not to exceed
12 months.
Eddy current
inspections:
at intervals
not to exceed
36 months.
For all
A/P's on which
Mod. PM6000 is
accomplished
prior to assembly
of main support
beam into wing
Accomplished
Whichever occurs
later: -within
8 years since new;
or -within 8 years
since new right and
left main support
beams are installed.
Ultrasonic
inspections:
at intervals
not to exceed
2 years.
For all
A/P's on
which Mod.
PM6000 is
accomplished
after assembly
of main support
beam into wing.
Accomplished
Within 2 years
after installation
of Modification
PM6000
Ultrasonic
inspections:
at intervals
not to exceed
2 years
B. Cracks in the main landing gear main support beam must be repaired, prior to further flight, in a manner approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
C. Installation of main support beam, part number EDO3-5007/8 (Modification PM5928) constitutes terminating action for the requirements of this AD.
D. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region.
NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who may add any comments and then send it to the Manager, Standardization Branch, ANM-113.
E. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the modifications required by this AD.
All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to British Aerospace PLC, Librarian for Service Bulletins, P.O. Box 17414, Dulles International Airport, Washington, D.C. 20041. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.
This AD supersedes AD 87-13-03 (Amendment 39-5654) which became effective on July 30, 1987.
This amendment (39-6193, AD 89-09-06) becomes effective on May 16, 1989.