ASN Wikibase Occurrence # 235671
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| Date: | Saturday 2 May 2020 |
| Time: | 07:00 LT |
| Type: |  Dayton-Wright DH-4 |
| Owner/operator: | Saving Liberty DH4 LLC |
| Registration: | N32517 |
| MSN: | 12459 |
| Year of manufacture: | 1918 |
| Total airframe hrs: | 5 hours |
| Engine model: | Lincoln Liberty V12 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Bowling Green-Warren County Regional Airport (BWG/KBWG), KY -
 United States of America
|
| Phase: | Landing |
| Nature: | Test |
| Departure airport: | Bowling Green-Warren County Airport, KY (BWG/KBWG) |
| Bowling Green-Warren County Airport, KY (BWG/KBWG) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, during the first flight test of the antique airplane, which was in the process of being restored, he had difficulty controlling the airplane in the roll axis. After takeoff, he noticed that the airplane required some right aileron to keep the wings level. After turning crosswind, the problem worsened and required that he apply more pressure to the control stick (in the right aileron direction). As he turned downwind, he used nearly full right aileron to maintain control, and the force on the control stick was so high that he was unable to hold it with one hand. When he removed his left hand from the control stick to adjust the throttle, the airplane would roll toward the left. As the airplane approached the base leg, the pilot was unable to keep the wings level; the airplane entered a slip and he was unable to prevent the airplane from turning left. The airplane descended, touched down in the grass to the right of the runway, and came to rest nose down.
Examination of the airplane revealed that the aileron control system was continuous. However, due to the airplane damage, the rigging of the aileron system could not be evaluated.
The airplane sustained substantial damage to the forward fuselage, lower wing, and horizontal stabilizer.
Probable Cause: A primary control (aileron) system anomaly that progressively worsened during a test flight resulted in a loss of control. The reason for the anomaly was not determined due to impact damage.
Accident investigation:
 |
|
Sources:
FAA register: https://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=32517
NTSB ERA20CA168
Location
Images:
Photo: FAA
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 02-May-2020 23:00 | Captain Adam | Added |
| 03-May-2020 02:53 | Geno | Updated [Registration, Cn, Operator, Nature, Source] |
| 03-May-2020 07:19 | RobertMB | Updated [Time, Source, Narrative] |
| 07-May-2020 07:29 | wilda | Updated [Aircraft type] |
| 07-May-2020 07:31 | harro | Updated [Aircraft type] |
| 07-May-2020 07:31 | harro | Updated [Source, Narrative] |
| 26-Mar-2021 14:13 | ASN Update Bot | Updated [Time, Other fatalities, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
| 26-Mar-2021 14:29 | harro | Updated [Other fatalities, Source, Narrative, Photo] |
Corrections or additions? ... Edit this accident description
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