89-03-11 BRITISH AEROSPACE: Amendment 39-6134.
Applicability: Model BAC 1-11 200 and 400 series airplanes, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent a hazardous landing condition, accomplish the following:
A. For Model BAC 1-11 200 series airplanes [pre-modification PM3070; Modification PM3070 with main support beams, Part No. EDO3-1001/2; or Modification PM5928]: At or prior to the accumulation of 50,000 landings or within the next 1,500 landings after April 25, 1988, (which is the effective date of AD 88-07-01, Amendment 39-5878), whichever occurs later, perform an eddy current or dye penetrant inspection for cracks in the rear pintle support beam, in accordance with paragraph 2.1.1 of the accomplishment instructions of British Aerospace BAC 1-11 Alert Service Bulletin 57-A-PM5896, Issue Number 4, dated February 17, 1988. Thereafter, repeat the inspection at intervals not to exceed 3,200 landings.
NOTE: Airplanes that complied with paragraph A. of AD 88-07-01, Amendment 39-5878, are considered to have met the initial inspection requirements of this paragraph, and the inspection is to be repeated at intervals not to exceed 3,200 landings.
B. For Model BAC 1-11 400 series airplanes [pre-modification PM3070; Modification PM3070 with main support beams, Part No. EDO3-1001/2; or Modification PM5928]: At or prior to the accumulation of 15,000 landings, or within 1,500 landings after March 17, 1986 (which is the effective date of AD 86-04-07, Amendment 39-5235), whichever occurs later, perform an eddy current or dye penetrant inspection for cracks in the rear pintle support beam, in accordance with paragraph 2.1.1 of the accomplishment instructions of British Aerospace BAC 1-11 Alert Service Bulletin 57-A-PM5896, Issue Number 4, dated February 17, 1988. Thereafter, repeat the inspection at intervals not to exceed 3,200 landings.
NOTE: Airplanes that complied with paragraph A. of AD 86-04-07, Amendment 39-5235, are considered to have met the initial inspection requirements of this paragraph, and the inspection is to be repeated at intervals not to exceed 3,200 landings.
C. For Model BAC 1-11 200 and 400 series airplanes [Modification PM3070 with main support beams, Part No. ENO3-1259/60]: At or prior to the accumulation of 7,500 landings or within 90 days after the effective date of this AD, whichever occurs later, perform an eddy current or dye penetrant inspection for cracks in the rear pintle support beam, in accordance with paragraph 2.1.1 of the accomplishment instruction of British Aerospace BAC 1-11 Alert Service Bulletin 57-A-PM5896, Issue Number 4, dated February 17, 1988. Thereafter, repeat the inspection at intervals not to exceed 3,200 landings.
NOTE: Model BAC 1-11 200 series airplanes that complied with paragraph A. of AD 88-07-01, Amendment 39-5878; and Model BAC 1-11 400 series airplanes that complied with paragraph A. of AD 86-04-07, Amendment 39-5235; are considered to have met the initial inspection requirements of this paragraph, and the inspection is to be repeated at intervals not to exceed 3,200 landings.
D. If cracks are discovered during the inspections required by paragraph A., B., or C., above, accomplish the following:
1. If cracks are less than or equal to 0.6 inch on pre-modification PM3070 airplanes, or less than or equal to 0.2 inch on post-modification PM3070 airplanes, repair or replace the cracked part prior to further flight, in accordance with paragraph 2.5.1 of the Accomplishment Instructions of British Aerospace BAC 1-11 Alert Service Bulletin 57-A- PM5896, Issue Number 4, dated February 17, 1988. If cracks are repaired in accordance with the service bulletin, continue to perform eddy current or dye penetrant inspections at intervals not to exceed 800 landings, providing that, in the case of pre-modification PM3070 airplanes, if cracks are presentin the aft half beam, cracked parts must be replaced prior to further flight.
2. If cracks exceed 0.6 inch in length on pre-modification PM3070 airplanes, or exceed 0.2 inch in length on post-modification PM3070 airplanes, repair or replace in a manner approved by the Manager, Standardization Branch, ANM-113, FAA, Northwest Mountain Region. If the part is repaired, further inspection requirements will be determined by the Manager, Standardization Branch, at the time of repair approval. If the main landing gear pintle support beam is replaced, the inspection must be repeated at intervals not to exceed 3,200 landings.
E. Prior to June 17, 1986, (which is 90 days after the effective date of AD 86-04-07, Amendment 39-5235), inspect for damage of the toggle links' special bolt assembly, part number AB44A1275, in accordance with the accomplishment instructions of British Aerospace BAC 1-11 Alert Service Bulletin 32-A-PM5872, dated July 25, 1983. If the special bolt assembly is found damaged, replace with a serviceable part before further flight.
NOTE: Airplanes that have complied with paragraph B. of AD 86-04-07, Amendment 39-5235, are considered to have met the requirements of this paragraph.
F. 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.
G. 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 copiesupon request to British Aerospace, Inc., 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 amendment supersedes AD 86-04-07 (Amendment 39-5235) which was effective March 17, 1986, and AD 88-07-01 (Amendment 39-5878) which was effective April 25, 1988.
This amendment (39-6134, AD 89-03-11) becomes effective March 15, 1989.