ASN Wikibase Occurrence # 217271
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| Date: | Tuesday 2 April 1991 |
| Time: | 16:00 |
| Type: |  Cessna 172RG |
| Owner/operator: | AV. TRAINING ENTERPRISE OF IL. |
| Registration: | N9592B |
| MSN: | 172RG0905 |
| Year of manufacture: | 1981 |
| Total airframe hrs: | 4567 hours |
| Engine model: | LYCOMING O-360-F1A6 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Minor |
| Category: | Accident |
| Location: | West Chicago, IL -
 United States of America
|
| Phase: | Landing |
| Nature: | Training |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
AFTER REPEATED ATTEMPTS TO LOWER THE LANDING GEAR, ONLY THE LEFT MAIN AND NOSE GEAR WOULD EXTEND. THE PILOTS ELECTED TO MAKE A WHEELS-UP LANDING. DURING THE LANDING, THE LOWER FUSELAGE AND PROPELLER TIPS RECEIVED MINOR DAMAGE. AN INVESTIGATION REVEALED THE RIGHT MAIN LANDING GEAR PIVOT ASSEMBLY (PN 2441100-1) HAD FAILED. A METALLURGICAL EXAMINATION DISCLOSED THE SPLINED SHAFT ON THE PIVOT ASSEMBLY HAD FRACTURED IN TORSIONAL OVERLOAD. AS A RESULT, MECHANICAL EXTENSION OF THE RIGHT MAIN LANDING GEAR WAS NOT POSSIBLE.
Probable Cause: FAILURE OF THE SPLINED SHAFT ON THE RIGHT MAIN LANDING GEAR PIVOT ASSEMBLY. A FACTOR RELATED TO THE INCIDENT WAS INADEQUATE DESIGN OF THE LANDING GEAR PIVOT ASSEMBLY.
Accident investigation:
 |
|
Sources:
NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X16751&key=1
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Nov-2018 12:47 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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