Service difficulty report · Fitting · Boeing 7377H4

Difficulty date
August 16, 2021
Submitted
September 16, 2021
Operation
Air carrier
Aircraft
N413WN
Make and model
Boeing 7377H4
Aircraft serial
29819
Aircraft time
67,173 hours, 39,106 cycles
Part
Fitting
Condition
Corroded
Location
Vertical Stab
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

LH O/B REAR SPAR FITTING OF VERTICAL STABILIZER(FTG-LH FWD MAIN)HAS PITTING CORROSION. ; / [01] REMOVED LH O/B REAR SPAR FITTING OF VERTICAL STABILIZER - LH FWD MAIN IN IAW SRM 51-40-02-0G-0; [02] VERIFIED 1. OK TO LOCATE AND DRILL NEW FITTING.; [03] PARTIALLY: LOCATED AND DRILLED NEW FITTING OF VERTICAL STABILIZER L/H O/B (NO COMPLETED) IN IAW SRM 51-40-02-0G-0; [04] COMPLETED DRILLED NEW FITTING OF VERTICAL STABILIZER L/H O/B FWD IN IAW SRM 51-40-05-0G-0; [05] TREATED + PRIMED ALL FASTENERS HOLES OF NEW FITTING IN IAW SRM 51-20-01-0G-0; [06] VERIFIED STEP 3;4 AND 5. OK TO INSTALL NEW FITTING.; [07] INSTALLED L/H O/B REAR SPAR FITTING OF VERTICAL STABILIZER - L/H FWD MAIN IN IAW DWG # 148A8200 AND 51-40-02-0G-0; [08] REMOVED AND REPLACED L/H O/B REAR SPAR FITTING OF VERTICAL STABILIZER- LH FWD MAIN IN IAW DWG # 148A8200 AND 51-40-02-0G-0; [09] VERIFIED STEPS 7AND 8.; [10] VERIFIED STEPS 7AND 8.

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