Service difficulty report · Seat Track · Boeing 7377H4

Difficulty date
March 9, 2022
Submitted
April 11, 2022
Operation
Air carrier
Aircraft
N468WN
Make and model
Boeing 7377H4
Aircraft serial
33858
Aircraft time
58,378 hours, 34,580 cycles
Part
Seat Track
Condition
Corroded
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

CORROSION ON PASSENGER CABIN SEAT TRACK BS400 LBL45 WL208. / [01] BLENDED AND REMOVED CORROSION DAMAGE FROM SEAT TRACK AT BS 400 LBL 45 WL 208 IAW SRM 53-00-52-1A-1 STEP 2. A.;[02] VERIFIED CORRECTIVE ACTION 1.;[03] EVALUATED CORROSION REMOVAL FROM SEAT TRACK AT BS 400 LBL 45.5 WL 208 FOUND .011 INCH REMOVED FROM ALLOWABLE OF .020 INCH WITHIN LIMITS IAW SRM 53-00-52-1A-1 STEP 4. A. FIG 103 A. USING DIAL DEPTH GAGE ATS ID ATS1737 S/N UNKNOWN CAL DATE 07/2021;[04] VERIFIED APPLICABILITY OF SRM 53-00-52-1A-1 ALLOWABLE DAMAGE;[05] VERIFIED CORRECTIVE ACTIONS 3; 4. <BR><BR>CORROSION REMOVAL FOUND TO BE IN LIMITS.;[06] SEAT TRACK WILL BE REPLACED ON CUST SYSTEM ID: TTG8Q00B845Z DUE TO OUT OF LIMITS.;[07] SEAT TRACK WILL BE REPLACE ON CUST SYSTEM ID: TTG8Q00B845Z DUE TO OUT OF LIMITS.;[08] WRITTEN AN ERROR STATEMENT ON CORRECTIVE ACTION 6 AND 7.;[09] AMENDMENT TO STEP 3: VERIFIED DAMAGE LIMITS AT SEAT TRACK BS400 LBL 45 WL 208 REMOVED .011 INCH 6' X 1.1' AREA WITHIN ALLOWABLE LIMITS OF .040 IAW SRM 53-00-52-1A-1 STEP 4.A. FIG 103 A. USING DIAL DEPTH GAUGE ATS ID E9655 S/N UNKNOWN DUE 03/2022;[10] DAMAGE LIMITS AT SEAT TRACK BS400 LBL 45 WL 208 REMOVED .011 INCH 6' X 1.1' AREA WITHIN ALLOWABLE LIMITS OF .040 IAW SRM 53-00-52-1A-1 STEP 4.A. FIG 103 A. TRACK TO BE REPLACED ON CCN TTG8Q00B845Z.;[11] VERIFIED CORRECTIVE ACTION STEP 9.;[12] VERIFIED CORRECTIVE ACTION STEPS 9 AND 10.;[13] EDITED CORRODED ELEMENT PART NUMBER IN MEASUREMENT TABLE.;[14] CERTIFIED EDIT.

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