Service difficulty report · Slat · Boeing 7377H4

Difficulty date
July 8, 2023
Submitted
August 15, 2023
Operation
Air carrier
Aircraft
N229WN
Make and model
Boeing 7377H4
Aircraft serial
32498
Aircraft time
58,665 hours, 35,024 cycles
Part
Slat
Part number
UNKNOWN
Condition
Corroded
Location
Zn 600 Right Win
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

RIGHT WING - PITTING CORROSION AT OUTBOARD MAIN TRACK #8 SLAT<[01] UPDATED PART REQUIREMENT SECTION.;[02] REMOVED FLEX SKIN COMMON TO #8 SLAT OUTBOARD MAIN TRACK FOR ACCESS OF MAIN TRACK REMOVAL IAW SRM 51-40-02-0G-0.;[03] REMOVED #8 SLAT OUTBOARD MAIN TRACK IAW AMM 27-81-21-000-802 PARA.E.(4;5 & 6). OK TO INSTALL NEW MAIN TRACK.;[04] VERIFIED CORRECTIVE ACTION STEP 3. VERIFIED OK TO INSTALL.;[05] INSTALLED #8 LEADING EDGE SLAT NEW OUTBOARD MAIN TRACK PART NUMBER 114A7511-5 IAW AMM 27-81-21-400-802. PARA.G.(1 - 5). TORQUE WRENCH ID:ATS2099; CAL DUE 08/2023.;[06] OK TO INSTALL FLEX SKIN REMOVED IN ACTION STEP 2 FOR ACCESS.;[07] VERIFIED CORRECTIVE ACTION STEPS 5 AND 6. VERIFIED OK TO INSTALL FLEX SKIN.;[08] INSTALLED FLEX SKIN COMMON TO #8 SLAT OUTBOARD MAIN TRACK IAW SRM 51-40-02-0G-0.;[09] VERIFIED CORRECTIVE ACTION STEP 8.;[10] UPDATED REFERENCE; AMM 27-81-21-400-802.;[11] VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.

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