REF/A/ copy of SB 747-53A2704 ( Copy attached )
REF/B/ Boeing communication message SR 1-710340462
JAL would like to comment one subject.
On REF/A/, compliance time of "general visual inspection for external doublers in
Area 1, 2 and 3" is 16,000 total flight cycles". However Boeing advised JAL that
compliance time of only Area 1 is 16,000 total flight cycles, and compliance time
of Area 2 and 3 is 25,000 total flight cycles, since "general visual inspection for
external doubler" should be done together with other HFEC inspections. Therefore
JAL would like to ask FAA to change the AD requirement as attached. Regarding
this issue, JAL talked with Boeing and received information that SB original should
be as shown on REF/A/ and Boeing will revise in next SB revision per REF/B/.
Action requested
1. JAL would like to ask FAA to wait issuance of AD until SB revison 1 issuance
which includes datum correction.
2. If FAA can not wait issuance of SB Rev.1, please reflect datum contents into
AD, since it is the error of SB original.
Best Regards
JAL Masami. SUZUKI
Japan Airlines
This is comment on Rule
Airworthiness Directives; Boeing Model 747 Airplanes
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Japan Airlines
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Japan Airlines
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