Service difficulty report · Support · Boeing 73779P

Difficulty date
August 22, 2023
Submitted
September 25, 2023
Operation
Air carrier
Aircraft
N7826B
Make and model
Boeing 73779P
Aircraft serial
30035
Aircraft time
56,002 hours, 37,056 cycles
Part
Support
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFT CARGO FLOOR TO SIDE WALL SUPPORT HAS CORROSION AT BS 727+7 - 747+2; RBL 21; WL 156<[01] EFFECTIVITY SRM 53-60-53-0I-2 IDENTIFICATION 2 AND SRM 53-00-53-1A-2 ALLOWABLE DAMAGE 2 ARE APPLICABLE TO A/C.;[02] VALIDATED APPLICABILITY SRM 53-00-53-1A-2 ALLOWABLE DAMAGE;[03] UPDATED THE TABLE.;[04] REPAIRED CORROSION ON FLOOR TO SIDEWALL SUPPORT BS 727+7 - 747+2; RBL 21; WL 156 PER SRM 51-10-02 AND SRM 53-00-53-1A-2;[05] VERIFIED CORRECTIVE 3 AND 4 AND MEASUREMENT TABLE.

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