# SDR CALA2020050900939

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2020
- Submitted: May 9, 2020
- Operation: Air carrier
- Aircraft: [N78285](https://openairdocs.org/aircraft/N78285), registered now
- Make and model: Boeing 737824
- Aircraft serial: 33452
- Aircraft time: 53,129 hours, 18,658 cycles
- System (JASC): [5512 · Horizontal Stabilizer, Plate/Skin](https://openairdocs.org/jasc/5512)
- Part: Skin
- Part number: 182A40011
- Condition: Cracked
- Location: Rt Horiz Stab
- 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/CALA2020050900939

## Discrepancy

EA 5510-01843 REV H OP 001:RH HORZ STAB AFT OF FWD SPAR, STA 147.9, 30.5 TO 31.25". CRACK. REF BY PEMCO NR 2759N537 REPAIRED RH HORIZ STAB STIFFENER #2 IAW SRM 55-10-09RPR4 FIG202 AND REPAIRED LOWER SKIN IAW B737-800 SRM 55-10-01 RPR11 FIG204. INSP REQUIREMENTS PER TABLE 204 WITH INSP THRESHOLD @56000 TOTAL FLT CYCLES WITH A EXTERNAL DVI AT 9000 FLT CYCLES AND LOW FREQ EDDY CURRENT AT 9000 FLT CYCLES PER 737 NDT PART 6 51-00-26 FIG1 CORRECTION TO TEXT: REPAIRED RH HORZ STAB SKIN AFT OF FWD SPAR STA 147.9 IAW SRM 55-10-01 RPR 11 TABLE 202 & FIG 204. INSP THRESHOLD @ 56000 TOTAL FLT CYCLES. WITH A EXTERNAL DVI AT 9000 FC AND LFEC INSP AT 9000 FC PER 737 NDT PART 6 51-00-26 FIG1. CYCLES WITH REPEAT DVI AND LFEC INSPECTIONS EVERY 9000 FLIGHT CYCLES AFTER IN REFERENCE WITH SRM 55-10-01 R

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