Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 26, 2020
Submitted
June 12, 2020
Operation
Air carrier
Aircraft
N477WN
Make and model
Boeing 7377H4
Aircraft serial
33988
Aircraft time
55,517 hours, 32,839 cycles
Part
Support
Condition
Corroded
Location
Fuselage
Stage of operation
IN
How discovered
V
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

CORROSION ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 400-500D; LBL 24; WL 154. DAMAGE ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT BS 400-500D; LBL 24; WL 154 FOUND TO BE OUT OF LIMITS PER SRM 53-00-53.1A-2; PARA 4A(2A) FIG 103; DETAIL D; ALLOWABLE DAMAGE. REPAIR BY REPLACEMENT IAW SRM 51-10-02-0G-0; PARA 9A(1). REMOVED DAMAGED FLOOR SUPPORT IAW SRM 51-40-02. FABRICATED AND INSTALLED A NEW FLOOR SUPPORT IAW SRM 51-40-02; SRM 53-00-53-2R-5; SRM 51-40-05 AND DWG 143A7500 SH 45; REV-.

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