# SDR MJYA20180917002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2018
- Submitted: September 17, 2018
- Operation: Air carrier
- Aircraft: [N783TW](https://openairdocs.org/aircraft/N783TW), registered now
- Make and model: Doug DC-9-15F
- Registry model: [Doug DC-9-15F](https://openairdocs.org/model/mcdonnell-douglas-dc-9-15f) (OpenAirDocs)
- Aircraft serial: 47010
- Aircraft time: 56,203 hours, 65,811 cycles
- Engine: Pwa JT8D7B
- Engine time: 55,614 hours, 63,442 cycles
- System (JASC): [5260 · Entrance Stairs](https://openairdocs.org/jasc/5260)
- Part: Bolt
- Part number: NAS11039
- Condition: Sheared
- Location: Aft Airstairs
- Part time: 56,203 hours, 65,811 cycles
- Component: Air Stairs, Doug
- Component part number: 3917209501
- Stage of operation: TX
- 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/MJYA20180917002

## Discrepancy

THE ATTACH BOLTS REFERENCE IPC 52-60-04-01 ITEM 105 P/N NAS1203-9 ITEM 110 P/N NAS1103-9 THAT SECURE RETAINER ASSEMBLY (VENTRAL  STAIR DOOR BEARING)  REFERENCE IPC 52-60-04-01 ITEM 26 P/N 3917209-501 TO ADJACENT STRUCTURE AND AFT STAIR ACTUATING MECHANISIMS SHEARED DURING AFT STAIR OPENING PROCEDURE WHICH CAUSED STRESS CRACKING AND FAILURE OF SURROUNDING SUPPORT STRUCTURES.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.