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: | Monday 20 March 2000 |
| Time: | 07:31 LT |
| Type: |  Dornier 328-100 |
| Owner/operator: | Air Wisconsin |
| Registration: | N329MX |
| MSN: | 3049 |
| Year of manufacture: | 1996 |
| Total airframe hrs: | 7596 hours |
| Engine model: | P&W PW119C |
| Fatalities: | Fatalities: 0 / Occupants: 24 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Denver International Airport, CO (DEN/KDEN) -
 United States of America
|
| Phase: | Unknown |
| Nature: | Passenger - Scheduled |
| Departure airport: | BISMARCK , ND (KBIS) |
| Denver International Airport, CO (DEN/KDEN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the approach, the flight crew confirmed the landing gear was down and locked. The first officer landed the airplane on runway 35L in a slight left crosswind. When the airplane touched down, the landing gear warning horn sounded. The right main and nose landing gears retracted, and the airplane slid to a halt on the right side of the runway. According to the flight data recorder, the landing gear was extended and indicated down and locked (source data is the position of the nose landing gear). The nose landing gear became "unlocked" (i.e., unsafe) 2 seconds after the radio altitude reached 0 feet. Hydraulic pressure dropped to approximately 2,700 psi momentarily, then returned to normal (about 3,000 psi). The following items were subjected to various tests and no anomalies were noted: proximity switch electronics unit (PSEU), right main landing gear harness and proximity switches, landing gear selector valve, hydraulic pressure sensing valve, landing gear control assembly. Hydraulic fluid samples drawn from the filter pack, right main landing gear down lock assist actuator, and the return line for the landing gear selector valve were analyzed. No significant anomalies were noted. Partial systemic wiring tests were unremarkable.
Probable Cause: uncommanded retraction of the nose and right main landing gears during landing roll for reasons undetermined.
Accident investigation:
 |
|
Sources:
NTSB DEN00FA063
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Oct-2022 03:58 | 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