# SDR ASAA2017113022728

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2017
- Submitted: December 1, 2017
- Operation: Air carrier
- Aircraft: [N551AS](https://openairdocs.org/aircraft/N551AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 34593
- Aircraft time: 44,012 hours, 14,677 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Frame
- Part number: 141A81502
- Condition: Mechanic Error
- Stage of operation: IN
- How discovered: V
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017113022728

## Discrepancy

L1 DOOR FWD LOWER PANEL BELOW LOWER GUIDE PLATE ISOLATER FASTENERS DRILLED THROUGH AND INSTALLED INTO FRAME. GROUNDED - YES. REPAIRED STA 303.9 FRAME INNER CHORD IAW ASA EA 800-53EA-19551 REV 00 DATED 29NOV17. THIS IS A CATEGORY B REPAIR WITH STAGE 1 AND 2 APPROVAL. WITH AN INSPECTION THRESHOLD OF 50,000 TOTAL AIRFRAME FLIGHT CYCLES.

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