# SDR SWAA2022013160464

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2022
- Submitted: January 31, 2022
- Operation: Air carrier
- Aircraft: [N7881A](https://openairdocs.org/aircraft/N7881A), registered now
- Make and model: Boeing 737-7CT
- Registry model: [Boeing 737-7CT](https://openairdocs.org/model/boeing-737-7ct) (OpenAirDocs)
- Aircraft serial: 35084
- Aircraft time: 44,806 hours, 23,070 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Condition: Cracked
- Location: Horizontal Stab
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2022013160464

## Discrepancy

RIGHT HAND HORIZONTAL STABILIZER INSPAR RIB; STATION 120.30.; 2ND VERTICAL STIFFENER IS CRACKED. ; / REMOVED DAMAGE FROM RH HORIZONTAL STABILIZER INSPAR RIB STA. 120.30 2ND VERTICAL STIFFENER IAW SRM 53-10-09-2R-4 REPAIR-4; [03] REMOVED DAMAGE FROM RH HORIZONTAL STABILIZER INSPAR RIB STA. 120.30 2ND VERTICAL STIFFENER IAW SRM 55-10-09-2R-4 REPAIR-4; [04] VERIFIED CORRECTIVE ACTIONS 1-3.<BR><BR>APPLICABILITY AND DAMAGE REMOVAL; [05] HFEC INSPECTED CUTOUT IN STIFFENER PER 737NDT PART 6 51-00-00 PROCEDURE 23. FOUND CRACK IN WEB AND MARKED IN RED INK. TOOL N600 ATS1465.; [06] REMOVED DAMAGE FROM RH HORIZONTAL STABILIZER INSPAR RIB WEB STA. 120.30 2ND IAW SRM 55-10-09-2R-4 REPAIR-4; [07] HFEC REQUEST AT RH HORIZONTAL STABILIZER INSPAR RIB WEB TO ENSURE NO CRACKS EXIST FABRICATED [1] T-SECTION MADE FROM 60-5872#7075-T76511 EXTRUSION ; AMS-QQ-A-200/15 ; LOT# 1476286-1 ; FABRICATED [2] ANGLE MADE FROM BAC1490-2793 # 7075T62 EXTRUSION LOT# 1474027-1 AND FABRICATED (2EA) [3] SHIMS MADE FROM 7075T6#0.020' LOT# 1472548-1 ; LOCATED AND DRILLED ALL REPAIR PARTS IAW SRM 55-10-09-2R-4 REPAIR-4; OK TO TREAT AND PRIME ALL REPAIR PARTS AND CUTOUT;] APPLIED CHEMICAL CONVERSION COATING AND PRIMER TO REPAIR PARTS AND COMMON AREA IAW SRM 55-10-09-2R-4 OK TO INSTALL.CHEMICAL CONVERSION AND PRIMER APPLICATION PER SRM 55-10-09-2R-4. INSTALLED REPAIR PARTS PER SRM 55-10-09-2R-4; [VERIFIED RIB REPAIR IS COMPLETE PER SRM 55-10-09-2R-4. RIB WILL BE REINSTALLED ON TTG8Q00A83QY.

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