# SDR DALA1151699885

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 6, 2011
- Submitted: September 7, 2011
- Operation: Air carrier
- Aircraft: [N401EA](https://openairdocs.org/aircraft/N401EA), registered now
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 47682
- Aircraft time: 74,502 hours, 68,906 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Sill
- Condition: Cracked
- Location: Fuselage
- 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/DALA1151699885

## Discrepancy

LT NR 1 MAIN ENTRY DOOR UPPER SILL WEB CRACK. BS 460. S-17L. L=0.8" PER B747-400 SRM 53-10-15 R1 PERFORMED THE REPAIR.  REPEAT DVI OF THE MAIN ENTRY DOOR 1 UPPER MAIN SILL OUTER CHORD, WEB, AND FRAME ATTACH ANGLES FOR CRACK(S) PER PART 2. (WHICHEVER OCCURS LAST): 1. WITH 6000 FLIGHT-CYCLES FROM THE LAST INSP. 2. WITHIN 1500 FLIGHT-CYCLES AFTER THE  ORIG ISSUE DATE OF SB. (NOT TO EXCEED): 6000 FLIGHT-CYCLES.

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