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Status: Information verified through data from accident investigation authorities
Date:Monday 10 May 2021
Type:Silhouette image of generic AT76 model; specific model in this crash may look slightly different
ATR 72-600 (72-212A)
Operator:Uni Air
Registration: B-17010
MSN: 1150
First flight: 2014-05-07 (7 years )
Total airframe hrs:13173
Engines: 2 Pratt & Whitney Canada PW127M
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 0 / Occupants: 70
Total:Fatalities: 0 / Occupants: 74
Aircraft damage: Substantial
Location:Nangang Island-Matsu Nangan Airport (LZN) (   Taiwan)
Phase: Landing (LDG)
Nature:Domestic Scheduled Passenger
Departure airport:Taipei-Songshan Airport (TSA/RCSS), Taiwan
Destination airport:Nangang Island-Matsu Nangan Airport (LZN/RCFG), Taiwan
UNI Air flight 9091, an ATR 72-600 (72-212A), registration B-17010, departed Taipei-Songshan Airport at 09:27 local time, on a flight to Nangang Island. The copilot was Pilot Flying.
The flight was cleared for an RNP approach to runway 21. At 10:05 the aircraft was at 958 feet and passed the minimum descent height. The flight reported runway in sight and continued the approach.
At a distance of 1.5 nm from the runway threshold, the aircraft dropped below the glide slope.
At 10:06:14, at about 0.15 nm from the runway, the pilot called "come and go around", and two seconds later, the autopilot was disconnected. Four seconds later the main landing gear and tail skid struck the top of a concrete perimeter wall
The flight crew continued the missed approach procedure and radioed that they suspected damage to the nose landing gear.
At 10:08, the flight crew requested to return to Songshan Airport.
Suspecting damage to the nose gear, the flight crew first flew a low pass over runway 10 at 10:45 hours. The tower controller at Songshan Airport reported observering damage to the right main gear wheels. The pilot decided to fly the traffic circuit with the gear down and landed on runway 10 at 11:07 hours.
The aircraft and the runway surface were damaged but there were no injuries.

Accident investigation:
Investigating agency: TTSB
Status: Investigation ongoing
Accident number: TTSB-FRP-21-09-001




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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Taipei-Songshan Airport to Nangang Island-Matsu Nangan Airport as the crow flies is 199 km (125 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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ATR 72

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