Service difficulty report · Shield · Boeing 73776N

Difficulty date
November 15, 2023
Submitted
December 15, 2023
Operation
Air carrier
Aircraft
N7722B
Make and model
Boeing 73776N
Aircraft serial
32668
Aircraft time
55,418 hours, 28,473 cycles
Part
Shield
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

FORWARD CARGO DOOR CUTOUT FWD SHIELD RBL 21' BETWEEN STA 420-440 UPPER SURFACE CORROSION<[01] REMOVED CORROSION AT FWD CARGO COMPARTMENT STA 490 TO STA 500A;RH AFT SHIELD SUPPORT AND FOUND WITHIN ALLOWABLE DAMAGE LIMITS AS PER REF SRM 53-30-15-1A-1 RESTORED ORIGINAL FINISHING AS PER REF SRM 51-20-01-0G-0;[02] CORRECTION TO STEP 1; SHOULD READ: REMOVED CORROSION AT FWD CARGO DOOR CUTOUT RH FWD SHIELD SUPPORT STA 420 TO STA 440 AND FOUND WITHIN ALLOWABLE DAMAGE LIMITS AS PER REF SRM 53-30-15-1A-1. RESTORED ORIGINAL FINISHING AS PER REF SRM 51-20-01-0G-0 AND AMM 51-21-72-370-804.;[03] VERIFIED STEP 1; 2

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