Service difficulty report · Rail · Boeing 7377H4

Difficulty date
December 22, 2019
Submitted
March 28, 2022
Operation
Air carrier
Aircraft
N423WN
Make and model
Boeing 7377H4
Aircraft serial
29827
Aircraft time
60,925 hours, 35,958 cycles
Part
Rail
Condition
Corroded
Location
Aft Cargo Compt
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

FOUND SPOT OF CORROSION AT AFT CARGO FLOOR PANEL SUPPORT LONGITUDINAL LAP SPLICE AT BILGE AREA STA 947.5 - 3 AND BL0. DOT 82-135. / REMOVED CORROSION ON AFT CARGO COMP. FLOOR PANEL SUPPORT LONGITUDINAL (RAIL) PER REF B-737 SRM 51-10-02-0G-0; ORIGINAL MAT. .063'; MAT. LOST .021' ; MAT. REMAINING .042'; AREA FOUND OUT OF LIMITS PER REF B-737 SRM 53-00-53-1A-2 FIG. 103 DETAIL 'D' REMOVED CORRORED RAIL PER REF B-737 SRM 51-40-02-0G-0; FABRICATED NEW RAIL; MAT. USED P/N 3953025; P.O #1656330; TREATED AND PRIMED NEW RAIL PER REF B-737 AMM 51-21-41-370-802 AND 51-21-72-370-804; INSTALLED NEW RAIL PER REF B737 SRM 51-40-02-0G-0

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