Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date
February 21, 2024
Submitted
March 7, 2024
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
40,661 hours, 12,724 cycles
Part
Transition Panel
Part number
143A7501
Condition
Corroded
Location
Fwd Cargo
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

FWD CARGO COMPARTMENT RH TRANSITIONAL PANEL HAS MULTIPLE SPOTS OF SURFACE CORROSION AREAS MARKED WITH BLACK. GROUNDED - YES. REMOVED CORROSION. ORIGINAL THICKNESS: .040, REMOVED: .040, REMAINING .00. FOUND TOBE OUT OF LIMITS DUE TO 100% OF MATERIAL LOSS IAW B737-900 SRM 53-00-53-1A-2. REMOVED AND FABRICATED NEW FWD CARGO COMPARTMENT RH TRANSITION, ALODINED, PRIMED, AND INSTALLED IAW B737-900 SRM53-00-53-2R-5. MATERIAL ID: P/N: BAC1496-444 7075-T62 PO:1070139.1 TOOL# T8224K CAL DUE: 25/OCT/24.