SDR SWAA2020030442046

Service difficulty report · Fitting · Boeing 7377H4

Difficulty date: January 30, 2020
Submitted: March 4, 2020
Operation: Air carrier
Aircraft: N426WN
Make and model: Boeing 7377H4
Aircraft serial: 29830
Aircraft time: 61,080 hours, 36,269 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Fitting
Part number: 146A1320
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 STR27 L/H KEEL BEAM BS 727C TO FRAME CLIP OUTBOARD SIDE WL156 DUE TO BLUE WATER SPILL CORROSION ON CLIP FOUND OUT OF LIMITS DUE TO PROXIMITY TO FASTENER HOLE, REMOVED CLIP, LOCATED, DRILLED & FABRICATED FROM BAC 1490-2815 7075762 M#1424560 APPLIED CHEMICAL CONVERSION COATING & PRIMED PER DWG 146A1320, SRM 51-40-02-0G-0 AMM 51-21-41-370-802, AMM 51-21-72-370-804

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