# NTSB Accident LAX90LA171
> **HUGHES 369E** · 1990-05-11 · FIREBAUGH, CA, USA · NONE
## Event
- **NTSB number:** LAX90LA171
- **Event ID:** 20001212X23173
- **Type:** Accident
- **Date:** 1990-05-11
- **Location:** FIREBAUGH, CA, USA
- **Coordinates:** 36.850002, -120.540664
## Injuries
- **Highest injury:** NONE
- **Fatal:** 0
- **Serious:** 0
- **Minor:** 0
- **Uninjured:** 1
- **Total aboard:** 1
## Aircraft
- **Make:** HUGHES
- **Model:** 369E
- **Registration:** N5217N
- **FAR Part:** 133
- **Engines:** 1
- **Damage:** SUBS
## Conditions
- **Light:** DAYL
- **Weather:** VMC
## Probable cause

FAILURE BY COMPANY MAINTENANCE TO PERFORM A MANDATORY COMPRESSOR SECTION INSPECTION THAT RESULTED IN THE UNDETECTED EROSION OF THE COMPRESSOR VANES AND ENGINE FAILURE. CONTRIBUTING TO THE ACCIDENT WAS THE FAILURE OF THE PILOT TO MAINTAIN ADEQUATE MAIN ROTOR RPM AT CRITICAL ALTITUDE.

---
*Source: [NTSB CAROL](https://data.ntsb.gov/carol-main-public/basic-search?source=ntsb&type=event&ntsb_number=LAX90LA171) · AI Analytics · CC0 1.0*