Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
March 15, 2022
Submitted
April 8, 2022
Operation
Air carrier
Aircraft
N922WN
Make and model
Boeing 7377H4
Aircraft serial
32461
Aircraft time
46,030 hours, 27,571 cycles
Part
Seat Track
Condition
Loose
Location
Fuselage
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

REF TASK TTG8Q002CAF3: PAX CABIN SEAT TRACK FASTENER 'B' FOUND LOOSE AT BSTA 727B AND RBL 24.75 / [01] PARTIALLY REMOVED CEILING PANEL #141YAC; #142YAC AND REMOVED BLOW OUT PANEL #142YBC PER AMM 25-52-09-000-801 AND AMM 21-32-05-000-801.;[02] REMOVED FASTENER ON SEAT TRACK POSITION 'B' AT STA 727B RBL 24.75 PER SRM 51-40-02-0G-0;[03] VERIFIED; STEP # 1 AND # 2.;[04] PERFORMED HFEC INSP AROUND OF FASTENER OPEN HOLES. IAW B 737 NDT PART 6 51-00-00 PROCE 23. TOOL NORTEC 600. BC 166316. CALIB DUE 10-8-22. NO CRACKS FOUND.;[05] PERFORMED HFEC ROTO INSP ON FASTENER OPEN HOLES. IAW B 737 NDT PART 6 51-00-00 PROCE 16. TOOL NORTEC 600. BC 166316. CALIB DUE 10-8-22. NO CRACKS FOUND.;[06] PERFORMED HFEC COUNTERSUNK INSP ON FASTENER OPEN HOLES. IAW B 737 NDT PART 6 53-30-00 PROCE 3. TOOL NORTEC 600. BC 166316. CALIB DUE 10-8-22. NO CRACKS FOUND.;[07] HOLE DIAAMETER MEASURRES .252' FOUND TO BE IN LIMITS PER EA 22-153-00823-WIP1 / 8458993 TOOL USED DIAL CALLIPERS. C-ID 172988 AND DUE:04-NOV-22;[08] VERIFIED 7;[09] FASTENER INSTALLED PER EA 22-153-00823-WIP1 / 8458993;[10] OK TO REINSTALL PANEL #141YAC; #142YAC AND BLOW OUT PANEL #142YBC;[11] REINSTALL PANEL #141YAC; #142YAC AND BLOW OUT PANEL #142YBC PER 25-52-09-400-801 AND 21-32-05-400-801;[12] VERIFIED; STEP # 11.

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