ASN Wikibase Occurrence # 138194
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| Date: | Thursday 25 August 2011 |
| Time: | 17:31 |
| Type: |  Cessna T210M Turbo Centurion |
| Owner/operator: | Private |
| Registration: | N44HR |
| MSN: | 21062685 |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 5628 hours |
| Engine model: | Continental TSIO-520-R |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | St. Louis Downtown Airport - KCPS, IL -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Cahokia, IL (CPS) |
| Cahokia, IL (CPS) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot executed a wheel-up landing after normal and emergency extension procedures failed to properly lower the airplane's landing gear. The airplane sustained damage to the propeller, lower fuselage skins, and fuselage bulkheads. Postaccident retraction tests revealed that the landing gear extended and retracted abnormally. Examination of the landing gear system revealed a deformed spring on the uplock sequencing actuator. The spring was replaced and subsequent retraction tests were normal. Review of the hydraulic system for the airplane revealed that a failure of the uplock sequencing actuator could result in hydraulic pressure being directed to both sides of the main landing gear actuators, causing the landing gear to not fully extend. No other preexisting anomalies were found.
Probable Cause: A failure of a spring in the main landing gear actuation system that prevented the landing gear from extending.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Aug-2011 00:32 | gerard57 | Added |
| 26-Aug-2011 01:42 | RobertMB | Updated [Time, Aircraft type, Location, Destination airport, Source, Narrative] |
| 26-Aug-2011 06:51 | RobertMB | Updated [Aircraft type, Registration, Cn, Operator, Damage] |
| 21-Dec-2016 19:26 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 27-Nov-2017 17:06 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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