PenAir Flight 3296
PenAir Flight 3296 (marketed as Alaska Airlines Flight 3296 under a codeshare agreement with Alaska Airlines) was a domestic scheduled flight from Ted Stevens Anchorage International Airport in Anchorage, Alaska, to Unalaska Airport on Amaknak Island in the Aleutian Chain of Alaska. On October 17, 2019, the Saab 2000 operating the flight overran the runway after landing at its destination airport. Of the 42 passengers and crew on board, one passenger was fatally injured when a propeller blade penetrated the fuselage, one was seriously injured and ten suffered minor injuries.[1] The 24-year-old aircraft was substantially damaged during the accident and written off.[2]
 The Saab 2000 after leaving the runway of Unalaska Airport | |
| Accident | |
|---|---|
| Date | October 17, 2019 |
| Summary | Runway excursion |
| Site | Unalaska Airport, Amaknak Island, Alaska |
| Aircraft | |
| Aircraft type | Saab 2000 |
| Operator | PenAir d/b/a Alaska Airlines |
| IATA flight No. | 7H3296 |
| ICAO flight No. | NLA3296 |
| Call sign | PENINSULA 3296 |
| Registration | N686PA |
| Flight origin | Ted Stevens Anchorage International Airport |
| Destination | Unalaska Airport |
| Occupants | 42 |
| Passengers | 39 |
| Crew | 3 |
| Fatalities | 1( initially 0) |
| Injuries | 11 |
| Survivors | 41(initially 42) |
Accident
On the day of the accident, the aircraft departed from Anchorage at 15:15 AST and was due to land at Unalaska two hours and 15 minutes later. While descending toward Unalaska, the crew received clearance for a RNAV approach to Runway 13, a 4,501-foot-long (1,372 m) runway. As the aircraft approached the airport, the wind changed from 210 degrees at 8 kn (4.1 m/s) to 180 degrees at 7 kn (3.6 m/s), but was reported as 270 degrees at 10 kn (5.1 m/s). The aircraft became unstable and a go-around was executed. The flight returned for a visual approach onto Runway 13. The wind speed increased and the controller reported that winds were 300 degrees at 24 kn (12 m/s).
The crew decided to continue with the landing and touched down at 17:40. The aircraft landed 1,001 feet (305 m) down the runway with reverse thrust and wheel-braking inputs by the captain. When the aircraft reached 80 kn (150 km/h), maximum braking was applied. As an overrun was imminent, the pilots steered the aircraft right to avoid going into the water past the runway end. Attempts to stop on the paved runway surface failed, and the aircraft crossed a section of grass and then broke through a chain perimeter fence and crossed a ditch. The aircraft struck a large rock, crossed a public roadway and finally came to a stop on the shore of Iliuliuk Bay. The port wing or propeller struck a 4–5-foot (1.2–1.5-meter) signal post, the port propeller struck a 6 to 8-ft high yellow diamond shaped road sign, and again struck rock riprap as the plane came to a halt. This caused the port-side (left) propeller to shatter, sending debris and large pieces of the propeller blade into the fuselage. One of the blades was found inside the cabin. Two passengers were critically injured and another 10 had to receive medical care. One of the critically injured passengers died a day later.[1][2]
Investigation
On the day of the accident, the National Transportation Safety Board (NTSB) launched an investigation.[3] Two years later, on November 2, 2021, the final report was released, which stated that the accident had been caused by "the landing gear manufacturer's incorrect wiring of the wheel speed transducer harnesses on the left main landing gear during overhaul." Saab's design of wire harnesses, the Federal Aviation Administration (FAA) authorizing Unalaska Airport to operate the Saab 2000 without taking the runway safety area into consideration first, and the flight crew's decision to land in a tailwind that exceeded Saab's limits (which the NTSB labeled as inappropriate) were also factors in the accident.[4][5]
See also
References
- "Saab 2000, N686PA: Fatal accident occurred October 17, 2019 at Unalaska-Tom Madsen Airport (PADU), Unalaska, Alaska". www.kathrynsreport.com. October 18, 2019. Archived from the original on May 16, 2021. Retrieved March 11, 2021.
- Ranter, Harro. "ASN Aircraft accident Saab 2000 N686PA Unalaska-Tom Madsen Airport, AK (DUT)". aviation-safety.net. Aviation Safety Network. Archived from the original on June 3, 2023.
- Hradecky, Simon (October 18, 2019). "Accident: Pen SB20 at Unalaska on Oct 17th 2019, overran runway on landing". avherald.com. The Aviation Herald. Archived from the original on February 7, 2023.
- "Runway Overrun During Landing, Peninsula Aviation Services Inc., d.b.a. PenAir flight 3296, Saab 2000, N686PA, Unalaska, Alaska, October 17, 2019" (PDF). National Transportation Safety Board. November 2, 2021. NTSB/AAR-21/05. Archived (PDF) from the original on November 18, 2021. Retrieved November 18, 2021.
- "Maintenance Error Leads to Fatal Runway Overrun Accident". www.ntsb.gov. National Transportation Safety Board. November 2, 2021. Archived from the original on November 3, 2021. Retrieved November 18, 2021.