Service difficulty report · Flap · Boeing 7377H4

Difficulty date
January 4, 2023
Submitted
February 10, 2023
Operation
Air carrier
Aircraft
N214WN
Make and model
Boeing 7377H4
Aircraft serial
32486
Aircraft time
59,300 hours, 35,194 cycles
Part
Flap
Condition
Cracked
Location
Zn 500 Left Wing
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

L/W KRUEGER FLAP NO-1 O/B HINGE # 2 RIB FITTING CRACKED @ LOWER L/E MKD DOT<[01] REMOVED L/E FLAP #1 IN REF. AMM 27-81-11-000-801;[02] L/E FLAP #1 P/N 114A1110-7 S/N ASTA-246;[03] VERIFIED STEPS 1 AND 2 REMOVAL OF FLAP AND P/N; S/N.;[04] OK TO INSTALL KRUEGER FLAP;[05] LATE ENTRY: <BR>PARTIALLY RE-INSTALLED REPLACEMENT L/W KRUEGER FLAP #1 PER AMM 27-81-11-400-801 UP TO AND INCLUDING STEP H. (2) (C). PENDING HARDWARE REPLACEMENT AND TORQUE.;[06] VERIFIED STEP 5;[07] ACCOMPLISHED TORQUE OF HINGES 1 & 4 (B/C 164345. DUE 10/28/23); HINGES 2 & 3 (B/C 175290. DUE 3/10/23) PER REF. B737 AMM 27-81-11-400-801. BONDING METER B/C 160450. DUE 12/06/23;[08] VERIFIED STEP 7;[09] FINALIZED INSTALLATION OF L/W KRUEGER FLAP #1 REF B737 AMM 27-81-11-400-801. PERFORMED OPS CHECKS. CHECKS GOOD;[10] REMOVED AND REPLACED L/W KRUEGER FLAP #1 REF B737 AMM 27-81-11-000-801 (REMOVAL) AND AMM 27-81-11-400-801 (INSTALLATION). PERFORMED ADJUSTMENTS AND OPS CHECK. CHECK GOOD;[11] VERIFIED STEPS 9 AND 10

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