ASN Wikibase Occurrence # 297983
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: | Tuesday 17 July 2018 |
| Time: | 12:45 LT |
| Type: |  Aero Commander S2R |
| Owner/operator: | Noe Aviation LLC |
| Registration: | N5553X |
| MSN: | 1753R |
| Year of manufacture: | 1973 |
| Total airframe hrs: | 15680 hours |
| Engine model: | Pratt & Whitney R-1340-S3H1-G |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Vinton, Iowa -
 United States of America
|
| Phase: | Approach |
| Nature: | Agricultural |
| Departure airport: | Vinton Veterans Memorial Airpark, IA (KVTI) |
| Vinton, IA | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot stated that on final approach, he slowed the airplane for landing. When the airplane crossed the end of the runway, he reduced the throttle back, but the airplane would not slow, so he executed a go-around. During the go-around, the engine lost partial power and would not respond to the pilot's throttle inputs. The pilot then executed a forced landing in a cornfield, and the airplane sustained substantial damage to the fuselage and empennage.
Examination of the throttle control system revealed that the interlocking teeth mechanisms between the carburetor lever stop assembly and the throttle control lever were worn and lost integrity to interconnect. The teeth on the lever stop assembly were severely worn. Thus, it is likely that during the accident flight, when the pilot actuated the throttle control lever, the throttle control system failed when the worn-down teeth on the lever stop would not engage the teeth on the mating throttle control lever. This caused a loss of the throttle lever input, which allowed the engine to enter a low rpm condition. The material examination also noted a mismatch in hardness of the associated parts; although the hardness values were typical for the respective part compositions and microstructures, the mismatch in hardness lent itself to higher wear rates. A review of the airplane's maintenance records revealed that the carburetor had been removed for overhaul and reinstalled 135 hours before the accident. It is likely that maintenance personnel reinstalled the worn parts without thoroughly inspecting them.
Probable Cause: Loss of throttle control input due to a failure in the throttle control system. Contributing to the accident was the inadequate inspection and reinstallation of worn parts by maintenance personnel.
Accident investigation:
 |
|
Sources:
NTSB CEN18LA278
History of this aircraft
Other occurrences involving this aircraft
| 14 August 1984 | N5553X | William And Gary Hubler | 0 | Nampa, ID | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 11:24 | 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