ASN Wikibase Occurrence # 361149
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Thursday 21 October 1993 |
| Time: | 19:40 LT |
| Type: |  Beechcraft 76 Duchess |
| Owner/operator: | Aero/mech Inc. |
| Registration: | N5148M |
| MSN: | ME-43 |
| Total airframe hrs: | 6491 hours |
| Engine model: | LYCOMING O-360-A1G6D |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Scottsdale, AZ -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
THE CFI RETARTED THE THROTTLE ON THE LEFT ENGINE TO A ZERO THRUST SETTING. THE DUAL STUDENT CONTACTED THE AIRPORT AND WAS CLEARED FOR A STRAIGHT-IN APPROACH. DURING THE APPROACH, THE CFI FAILED TO INSTRUCT THE STUDENT TO MOMENTARILY CLEAR THE LEFT ENGINE. DURING THE ENSUING GO-AROUND, THE DUAL STUDENT APPLIED FULL POWER ON THE RIGHT ENGINE, BUT THE AIRPLANE WOULD NOT CLIMB. THE CFI DELAYED INSTRUCTING THE STUDENT TO APPLY FULL POWER ON THE LEFT ENGINE. WHEN HE DID INSTRUCT THE STUDENT TO APPLY FULL POWER ON THE LEFT ENGINE, THE ENGINE DID NOT RESPOND AND THE AIRPLANE WAS UNABLE TO MAINTAIN SUFFICIENT ALTITUDE. THE CFI ELECTED TO LAND THE AIRPLANE IN AN OPEN FIELD. THE OPERATOR REPORTED BOTH ENGINES OPERATED NORMALLY DURING THE EXAMINATION AND THE LEFT ENGINE SPARK PLUGS CONTAINED HIGH CARBON AND SOOT DEPOSITS.
Probable Cause: the flight instructor's failure to adequately supervise the flight, follow proper procedures/directives regarding leaning and clearing the idling engine, and his delay in applying power to the idling engine. The fouled spark plugs were a factor in this accident.
Accident investigation:
 |
|
Sources:
NTSB LAX94LA021
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Mar-2024 15:18 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation