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| Date: | Thursday 17 December 1998 |
| Time: | 10:56 LT |
| Type: |  Learjet 55B |
| Owner/operator: | Clay Lacy |
| Registration: | N554CL |
| MSN: | 55-040 |
| Engine model: | Garrett-AiResearch TPE 731 |
| Fatalities: | Fatalities: 0 / Occupants: 7 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Los Angeles, CA -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | San Diego, CA (KSAN) |
| (KLAX) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The twin turbojet airplane landed gear-up after experiencing a gradual loss of electrical power and the eventual total drain of both batteries. The flight crew taxied out to the runway at the departure airport with only the right engine running. When the flight crew received their takeoff clearance, they started the left engine and taxied onto the runway. After takeoff, they started to experience a loss in radio communications, transponder transmissions, autopilot control, and annunciator and panel lights. The flight crew attempted a landing after selecting normal landing gear extension. When they realized that the landing gear were not extended, the flight crew performed a go-around and the captain attempted to extend the landing gear using the emergency blow down system. The captain failed to hold the emergency blow down handle until it latched preventing the landing gear system from extending properly. The flight crew then landed the airplane with the landing gear retracted without utilizing the emergency free fall system. Review of the cockpit voice recorder revealed that there was no indication that the flight crew completed the engine start checklist, which would have put the engine driven generators on-line. There was also no indication that the flight crew examined the electrical system or performed an electrical failure checklist. It was also apparent that the flight crew failed to properly perform the alternate landing gear extension methods. The electrical system was examined after the accident. There were no anomalies noted that would have prevent normal operation of the primary electrical system, or, either the normal or emergency landing gear extension systems.
Probable Cause: the total loss of electrical power due to the flight crew's failure to complete the engine start checklist, or the electrical power failure checklist, which kept the generators off line and resulted in the complete discharged of both batteries. Also causal to the accident was the captain's failure to perform the emergency landing gear extension checklists, which resulted in a wheels-up landing.
Accident investigation:
 |
|
Sources:
NTSB LAX99FA051
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Mar-2024 07:17 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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