# SDR ALG2004F00035

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2004
- Submitted: July 9, 2004
- Operation: Air carrier
- Aircraft: [N211EL](https://openairdocs.org/aircraft/N211EL), registered now
- Make and model: Bell 206L-1
- Registry model: [Bell 206L-1](https://openairdocs.org/model/bell-helicopter-textron-206l-1) (OpenAirDocs)
- Aircraft serial: 45251
- Engine: Allsn 250C28B
- System (JASC): [6210 · Main Rotor Blades](https://openairdocs.org/jasc/6210)
- Part: Blade
- Part number: 206015001119
- Part serial: A4025
- Condition: Delaminated
- Location: Main Rotor Head
- Part time: 2,116 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ALG2004F00035

## Discrepancy

IN CRUISE FLIGHT, AIRCRAFT COMMENCED AN APPROX 1/1 VERTICAL BEAT WITH AN UNUSUAL NOISE AND (HUM) IN THE AIRFRAME.  PILOT DIVERTED TO FIELD LANDING SITE.  AFTER SHUT-DOWN, PILOT FOUND BLADE SKIN DELAMINATING NEAR TIP.  MAINTENANCE REMOVED AFFECTED BLADE AND INSTALLED SERVICEABLE MAIN ROTOR BLADE,  BALANCED AND TRACKED IAW MM, OPS CHECK FLIGHT WAS GOOD.

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