Service difficulty report · Fairing · Boeing 73776N

Difficulty date
January 22, 2023
Submitted
March 6, 2023
Operation
Air carrier
Aircraft
N7885A
Make and model
Boeing 73776N
Aircraft serial
33379
Aircraft time
62,518 hours, 31,343 cycles
Part
Fairing
Condition
Pulled
Location
Zn 100 Fus Lower
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

#8 FLAP TRACK FAIRING 644BB FASTENERS FOR AFT SEAL RETAINER HAVE PULLED FASTENERS (MARKED)<[01] PART/MATERIAL IDENTIFIED PER SRM 57-53-70-0I-1 FIGURE. 4 TABLE 3 ITEM 3.<BR>PULLED FASTENER HOLES EXCEED THE ALLOWABLE LIMITS AS GIVEN IN SRM 57-53-70-1A-1. PARA 4 B.<BR>REPAIR TO BE PERFORMED IAW SRM 51-70-04-2R-9 AS GIVEN IN SRM 57-53-70-2R-4. A.(2).;[02] VALIDATED REPAIR PER SRM 51-70-04-2R-9;[03] VERIFIED CORRECTIVE ACTIONS 1 AND 2.<BR><BR>VERIFIED MEASUREMENTS TABLE.;[04] REMOVED 9EA. FASTENERS 2EA. BULB SEALS & RETAINERS COMMON TO THE #8 FLAP TRACK FARING. IAW SRM 51-40-02-0G-0 PARA 9. TO FACILITATE REPAIR .;[05] PERFORMED DAMAGE REMOVAL & SURFACE PREPARATION IAW SRM 51-70-04 PARA 4. STEPS A-C.;[06] VERIFIED CORRECTIVE ACTIONS 4 AND 5;[07] APPLIED A MIXTURE OF BMS8-301 RESIN LOT JH2EAA8895 & MILLED FIBERS TO THE DAMAGED FASTENER HOLES IAW SRM 51-70-04-2R-9 PARA 4. STEPS E & F. THEN SET TO CURE REF CAL TOOL HOT BONDER. ID ATS2802 CAL DUE 10/2023FABRICATED THE REPAIR PLIES IAW SRM 51-70-04-2R-9 PARA 4 STEP J[15] RE INSTALLED 9EA FASTENERS & 2EA BULB SEALS & RETAINERS COMMON TO THE #8 FLAP TRACK FARING. AS REMOVED IN CORRECTIVE ACTION LINE 4: IAW SRM 51-40-02-0G-0 PARA 9. PER DWG 113A9150-14;[16] #8 FLAP TRACK FAIRING 644BB PULLED FASTENERS WERE REPAIRED IAW SRM 51-70-04-2R-9;

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