# SDR SWAA2022041181993

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 9, 2022
- Submitted: April 11, 2022
- Operation: Air carrier
- Aircraft: [N468WN](https://openairdocs.org/aircraft/N468WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 33858
- Aircraft time: 58,378 hours, 34,580 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Seat Track
- Condition: Corroded
- Location: Fuselage
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022041181993

## Discrepancy

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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