Service difficulty report · Shield · Boeing 73776N

Difficulty date
April 28, 2019
Submitted
March 8, 2022
Operation
Air carrier
Aircraft
N7818L
Make and model
Boeing 73776N
Aircraft serial
28609
Aircraft time
58,323 hours, 34,449 cycles
Part
Shield
Part number
143A812619
Condition
Corroded
Location
Fwd Cargo Rh
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

FWD CARGO COMPARTMENT AFT SHIELD HAS 2 EA. AREAS OF CORROSION AT FASTENER HOLES AS MARKED. STA; 497 TO 500A; RBL 25 / REMOVED CORROSION FROM FWD CARGO AFT SHILED; VERIFIED WITH 10X MAGNIFYING GLASS IAW SRM 51-10-02-0G-0. ORIGINAL THICKNESS .032' WITH A LOSS OF .015'; .017' REMAINING. FOUND TO BE OUT OF LIMITS IAW SRM 53-30-15-01-1. TOOL # 36309 CAL DUE 04/19/20. FABRICATED IN BACK SHOP ON W/O 392181-1400-0002. HEAT TREATED TO T62 ON BACKSHOP WO # 39281-1400-0002. LOCATED AND DRILLED IAW DWG 143A0080 SHEET 9 REV - AND SRM 51-40-05-0G. TREATED AND PRIMED IAW SRM 51-20-01-0G. INSTALLED FWD CARGO AFT SHIELD IAW SRM 51-40-02-0G- PARA 4 AND DWG 143A0080 SHEET 9 REV - P/N 143A8126-19

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