Service difficulty report · Shield · Boeing 737990ER

Difficulty date
September 9, 2025
Submitted
October 8, 2025
Operation
Air carrier
Aircraft
N471AS
Make and model
Boeing 737990ER
Aircraft serial
41703
Aircraft time
40,738 hours, 12,607 cycles
Part
Shield
Part number
143A8126
Condition
Corroded
Location
Zone 100
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 FWD SHIELD HAS CORROSION ON LOWER SIDE. GROUNDED - YES. REMOVED CORROSION, ORIGINAL THICKNESS .032, MAT LOSS .005, REMAINING THICKNESS .027. AREA OUT OF LIMITS PER B737-900ER SRM 53-30-15-01-1 AND SRM 53-30-15-1A-1. REMOVED DAMAGED PART AND INSTALLED P#143A8126-21 PO:1132259.1 PER B737-900ER SRM 51-40-02 AND BDWG143A8126 REV A.