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SDR ASAA2025060258572

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Service difficulty report · Threshold · Boeing 737990ER

FAA SDR system

Difficulty date
June 2, 2025
Submitted
June 10, 2025
Operation
Air carrier
Aircraft
N264AK
Make and model
Boeing 737990ER
Aircraft serial
36360
Aircraft time
28,003 hours, 9,145 cycles
System (JASC)
5320 · Fuselage Miscellaneous Structure
Part
Threshold
Part number
143A8122
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 DOOR THRESHOLD HAS CORROSION IN THE MIDDLE, THREE INCHES FROM DOOR OPENING. (MWARKED IN RED). GROUNDED - YES. REMOVED CORROSION FROM FWD CARGO DOOR THRESHOLD. ORIGINAL MATERIAL THICKNESS .045, MATERIAL REMOVED IS .002, REMAINING MATERIAL THICKNESS IS .043. FOUND TO BE WITHIN LIMITS. RESTORED FINISH. IAW B737-900ER SRM 53-30-15-1A-1 AND B737-900ER SRM 53-30-15-01-1. HASHMARKS APPLIED IAW B737-900ER AMM 51-05-01.