Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
March 7, 2023
Submitted
April 12, 2023
Operation
Air carrier
Aircraft
N956WN
Make and model
Boeing 7377H4
Aircraft serial
36672
Aircraft time
38,869 hours, 23,696 cycles
Part
Seat Track
Condition
Corroded
Location
Zn 200 Fus Top
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

PASSENGER CABIN - SEAT TRACK HAS CORROSION LBL 45.5 BS 727C; BS 727D+12; BS 747+3; BS 747+16; BS 767+13; BS 807+5; BS 827+16.<[01] VERIFIED APPLICABILITY FOR SRM 53-00-52-1A-1.<BR>REMOVED CORROSION FROM WELL OF SEAT TRACK LBL 45.5; FROM BS 727C TO BS 727C+3; L=3.0' X W=.900' X D=.043'; FOUND TO BE OUT OF LIMITS PER SRM 53-00-52-1A-1; PAR. 4.A.(2).(A); FIG. 103 DETAIL A.<BR>ID TOOL: ATS1738; S/N: UNKNOWN; D.D: 10/2023.;[02] CERTIFIED CORRECTIVE ACTION 1;[03] VERIFIED CORRECTIVE ACTION 1 AND MEASUREMENT TABLE.;[04] REMOVED SEAT TRACK FROM BS 727B- BS 887 IAW SRM 51-40-02;[05] SEAT TRACK FABRICATED IAW BOEING DRAWING 146A5300; REFER TO ATS BUILD RECORD 525461;[06] LOCATED AND DRILLED NEW CABIN SEAT TRACK AT BS 727B- BS 887 LBL 45 IAW DWG 146A5300 AND SRM 51-40-05.;[07] CERTIFI9ED CORRECTIVE ACTION 5 AND 6;[08] OK TO INSTALL PASSENGER CABIN - SEAT TRACK LBL 45.5 FROM BS 727B TO BS 887.;[09] VERIFIED CORRECTIVE ACTIONS 5; 6; AN 8. OK TO INSTALL SEAT TRACK.;[10] INSTALLED PASSENGER CABIN SEAT TRACK LBL 45.5 BS727B TO BS 887 PER SRM 51-40-02-0G-0 AND BOEING DWG 146A5300.;[11] CERTIFIED CORRECTIVE ACTION 10;[12] REJECTION: MISSING FASTENERS AND SHORT BOLTS SEE STEP 2;[13] UPDATED STEPS 1 AND 2.;[14] CORRECTION: UPDATED STEPS 1 AND 2;[15] VERIFIED STEPS 1; 2; AND CORRECTIVE ACTION 10

More about the Boeing 737-7H4