ASN Wikibase Occurrence # 294900
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| Date: | Wednesday 24 December 2003 |
| Time: | 20:30 LT |
| Type: |  Cessna 172RG |
| Owner/operator: | Avion Jet Center, LLC |
| Registration: | N4721R |
| MSN: | 172RG0017 |
| Year of manufacture: | 1979 |
| Total airframe hrs: | 10126 hours |
| Engine model: | Lycoming O-360 F1A6 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Key West, Florida -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Fort Pierce-Saint Lucie County Airport, FL (FPR/KFPR) |
| Key West International Airport, FL (EYW/KEYW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On approach the pilot selected to extend the landing gear, but he did not get a green light to confirm all three landing gear were down and locked. He checked the electrical fuses and performed several cycles of gear extension with no change to the indication of the landing gear position. He pumped the emergency gear extension hand pump. He advised air traffic control and was instructed to perform several low fly-bys. Tower and fire rescue personnel visually verified that all three landing gear were down. As the airplane's main landing gear touched the runway in a soft field-landing configuration, the right main landing gear collapsed. The pilot stated that he pumped the emergency gear extension pump handle until he felt resistances. He could not remember how many strokes exactly he performed, somewhere from 2 to 3 strokes. The main landing gears were operationally checked once with the airplane's own battery power and twice with the emergency landing gear extension hydraulic hand pump for manual extension of landing gears. The main landing gears extended and locked into position within 12 to 15 pumps of the emergency landing gear extension hydraulic hand pump. No defects were observed in the operation of the extension and locking of the main landing gears by hand pump. An examination of the main landing left and right gear actuators and locking systems revealed no anomalies. Avion's chief flight instructor stated close to a month before the accident, on the accident airplane, he had to perform an emergency extension of the landing gear by the hand pump; more so, it took anywhere from 10 to 20 pumps to lower the gear and into the lock position. According to the chief pilot who checked out the pilot only verbal instructions on how to extend the landing gear by hand pump was given during the check ride in the airplane.
Probable Cause: Pilot's improper emergency landing gear extension procedure which resulted in the right main landing gear not locking in the down position subsequent right main landing gear collapsing on landing.
Accident investigation:
 |
|
Sources:
NTSB MIA04LA038
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 15:34 | ASN Update Bot | Added |
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