# SDR ASAA2023011541539

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 15, 2023
- Submitted: January 17, 2023
- Operation: Air carrier
- Aircraft: [N492AS](https://openairdocs.org/aircraft/N492AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44110
- Aircraft time: 26,354 hours, 8,288 cycles
- Engine: Cfmint CFM567B27E
- System (JASC): [7220 · Turbine Engine Air Inlet Section](https://openairdocs.org/jasc/7220)
- Part: Blade
- Part number: 3400010360
- Part serial: DM122323M
- Condition: Worn
- Location: Nr 1 Engine
- Part time: 26,370 hours, 8,295 cycles
- 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/ASAA2023011541539

## Discrepancy

#1 ENGINE #1 FAN BLADE HAS CU-NI-IN COATING DAMAGE PN: 340-001-036-0 S/N DM122323-M WEIGHT: 212890. GROUNDED - YES. ENGINE #1 REPLACED #1 FAN BLADE ALONG WITH #13 FAN BLADE IN PAIR. BLADES REPLACED IN REF B737-900 AMM TASK 72-21-02-000-802-F00. WHILE ACCOMPLISHING TASK FOUND #1 FAN BLADE SHIM WORN. REPLACED WITH NEW PART. #1 AND #13 FAN BLADES RESULTANT IS LOWER THAN 78 G IN. (200 CM. G).

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