Service difficulty report · Fairing · Boeing 7377H4

Difficulty date
November 17, 2021
Submitted
May 8, 2023
Operation
Air carrier
Aircraft
N475WN
Make and model
Boeing 7377H4
Aircraft serial
32474
Aircraft time
58,806 hours, 34,711 cycles
Part
Fairing
Condition
Cracked
Location
#3 Flap Track
Stage of operation
UK
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

NR 3 FLAP TRACK CANOE FAIRING CRACKED ON AFT INBD EDGE WHERE IT MEETS TAIL CONE. REMOVED FLAP TRACK AFT & TAILCONE FAIRING IAW AMM 27-51-18-000-802. FOUND CRACK ON AFT EDGE. REPAIRABLE IAW SRM 57-53-70-2R-4 REV. 74 TABLE 201. REMOVED DAMAGE & PREPPED AREA FOR REPAIR IAW SRM 51-70-04-2R-10REV. 74 PARA. 4 AND SRM 51-70-04-2R-0 REV. 74 PARA. 4 APPLIED AND BONDED REPAIR PLIES TO AREA AND CURED AT 200F FOR 3.75HRS THERMOMETER #30347 DUE 4/29/22 BOND IS SATISFACTORY/ NO DEFECTS IAW SRM 51-70-04-2R-10 REV. 74 PARA. 4 AND SRM 51-70-04-2R-0 REV. 74 PARA. 4 FIBERGLASS (A10273) RESIN (A54377) RESIN SWEPT AREA TO FILL IN IRREGULARITIES FOR AERODYNAMIC SMOOTHNESS IAW SRM 51-70-08-0G-0 AND CURED FOR 1HR @ 150F THERMOMETER #30347 DUE 4/29/22 SEALER RESIN (A71242) REMOVED AND RE-INSTALLED 5EA. NUTPLATES TO FACILITATE MAINTENANCE IAW SRM 51-40-02-0G-0 REV. 74 PARA. 4. SOLID SHANK RIVETS (A88275) *REQUESTING OKAY TO RESTORE FINISH TO REPAIR AREA* STEP 3 OK. OK TO PAINT RESTORED FINISH TO REPAIR AREA ON #3 FLAP TRACK CANOE FAIRING IAW AMM 51-21-99-300-801 REV. 75 PRIMER (A35225) PAINT (A74783) STEP 5 OK OK TO INSTALL #3 AFT FLAP TRACK FAIRING INSTALLED #3 AFT SUPPORT FAIRING IAW B737 AMM 27-51-18-400-802 STEPS 5.G.1 THROUGH 5.G.2.

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