# SDR 96ZZZX5550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 7, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N911TM](https://openairdocs.org/aircraft/N911TM), registered now
- Make and model: Aerosp AS 355F1
- Registry model: [Aerosp AS 355F1](https://openairdocs.org/model/aerospatiale-as-355f1) (OpenAirDocs)
- Aircraft serial: 5059
- System (JASC): [6210 · Main Rotor Blades](https://openairdocs.org/jasc/6210)
- Part: Blade
- Part number: 355A11002009
- Condition: Cracked
- Location: M/R
- Part time: 2,578 hours
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX5550

## Discrepancy

DURING A SCHEDULED 100-HOUR INSPECTION WHILE CLEANING THE MAIN ROTOR BLADES, A 6 INCH CRACK WAS DISCOVERED ON THE LOWER SURFACE 4 FEET, 6 INCHES FROM THE ROOT END.  STARTING 1 INCH FROM THE TRAILING EDGE TRAVELING CORDWISE, BUT DID NOT MEET THE SPAR AREA.  NO IDEAS AS TO WHAT CAUSED THE CRACK.  IT IS A GOOD IDEA TO REMOVE BLADES IF POSSIBLE WHEN INSPECTING THEM DUE TO THE DROOP OF THE BLADES WHEN STATIONARY, THE CRACK IS ALMOST IMPOSSIBLE TO SEE.

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