# SDR SWAA2025050521877

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 5, 2025
- Submitted: May 5, 2025
- Operation: Air carrier
- Aircraft: [N221WN](https://openairdocs.org/aircraft/N221WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 34259
- Aircraft time: 65,130 hours, 38,662 cycles
- System (JASC): [5511 · Horizontal Stabilizer, Spar/Rib](https://openairdocs.org/jasc/5511)
- Part: Rib
- Condition: Cracked
- Location: Zone 300
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2025050521877

## Discrepancy

CRACK INSPAR RIB LOWER SIDE LOC. ON FRONT SPAR RIB 120.30 AT LT HORIZONTAL STABILIZER 2025-224531<[01] TOOL USED ON ITEM 3 AND 4: EDDY CURRENT FLAW DETECTOR; P/N: NORTEC 600D; S/N: 60007161486; DUE DATE: 06-SEP-25;[02] TOOLS USED: TEMPERATURE CONTROLLER: P/N: P3015GOES00000; S/N: 142811020; DUE DATE: 29-JAN-26. TEMPERATURE CONTROLLER: P/N: P3015GOES00000 S/N: 112820025 DUE DATE: 28-JAN-26.;[03] REJECTED STEP 9 DUE TO INCORRECT BEND PROCESS ON REPAIR ANGLE [2];[04] VERIFIED MINIMUM BENT RADIUS ON ANGLE LOWER SIDE LOC. ON FRONT SPAR RIB 120.30 AT LT HORIZONTAL STABILIZER IAW SRM B737-700 51-30-01 FIGURE 3 TABLE A; SHEET 1; TOOL USED: PRECISION RADIUS GAUGE P/N: S167C S/N: AE-28535 DUE DATE: 04-SEP-25;[05] RIIRJCT RESOLUTION<BR>VERIFIED MINIMUM BENT RADIUS ON ANGLE LOWER SIDE LOC. ON FRONT SPAR RIB 120.30 AT LT HORIZONTAL STABILIZER IAW SRM B737-700 51-30-01 FIGURE 3 TABLE A; SHEET 1; FOUND WITHIN TOLERANCE.;[06] TOOL USED: RADIOMETER/PHOTOMETER KIT; P/N XRP-3000; S/N: 1753759; DUE DATE: 30-JUN-25.;[07] REPAIRED INSPAR RIB LOWER SIDE LOC. ON FRONT SPAR RIB 120.30 AT LT HORIZONTAL STABILIZER IAW B737-700 SRM: 55-10-09-2R-5 REPAIR 5. SEE INDIVIDUAL SIGN OFF BELOW.;[08] REPAIRED INSPAR RIB LOWER SIDE LOC. ON FRONT SPAR RIB 120.30 AT LT HORIZONTAL STABILIZER IAW B737-700 SRM: 55-10-09-2R-5 REPAIR 5. SEE INDIVIDUAL SIGN OFF BELOW<BR>RII

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