Service difficulty report · Shield · Boeing 73771B

Difficulty date
January 7, 2022
Submitted
February 3, 2022
Operation
Air carrier
Aircraft
N7845A
Make and model
Boeing 73771B
Aircraft serial
29366
Aircraft time
44,940 hours, 29,285 cycles
Part
Shield
Condition
Corroded
Location
Fwd Cargo Bay
Stage of operation
UK
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

FWD CARGO STRINGER 25R, BS 500 - 500A SHIELD UPPER SURFACE CORRODED. REMOVED CORROSION IAW SRM 51-10-02-0G-0; [02] VERIFIED 1.; [03] PERFORMED UT THICKNESS INSP ON FWD CARGO COMPT R/H STR 25 BETWEEN STA 500 AND 500A SHIELD UPPER SURFACE. IAW B 737 NDT PART 4 51-00-00 PROCE 3. TOOL 27MG. BC 172139. CALIB DUE 4-1-22. MINNI THICK 0.020'.; [04] ORIGINAL MAT. 0.032' MAT. REMOVED 0.020' MAT. REMAINING 0.012' FOUND OUT OF LIMITS IAW SRM 53-30-15-1A-1 FIG 103. PG 27. NEW SHIELD. INSTALLATION WILL BE ACCOMPLISHED ON CARD 5330-E-16461-NG.

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