ASN Wikibase Occurrence # 196518
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| Date: | Tuesday 4 July 2017 |
| Time: | 17:21 |
| Type: |  Piper PA-28-180 Cherokee |
| Owner/operator: | Horizon Aviation |
| Registration: | N9427J |
| MSN: | 28-3538 |
| Year of manufacture: | 1966 |
| Total airframe hrs: | 4323 hours |
| Engine model: | Lycoming O-360-A3A |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Isla Grande Airport, San Juan -
 Puerto Rico
|
| Phase: | Take off |
| Nature: | Private |
| Departure airport: | San Juan-Fernando Luis Ribas Dominicci Airport (SIG/TJIG) |
| San Juan-Fernando Luis Ribas Dominicci Airport (SIG/TJIG) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot reported that, before the local, personal flight, the airplane was fueled and that he performed a preflight inspection and an engine run-up with no issues noted. The takeoff was normal; however, during the initial climb, about 250 ft above ground level, the engine started to run roughly and lose power. The engine did not respond to throttle inputs. The pilot contacted the air traffic control tower and stated that he intended to return to the departure airport to land. He did not recall the remainder of the accident sequence. A passenger, who was also a certificated pilot, stated that, as the pilot was turning the airplane left back to the airport, he saw that the airspeed was decreasing and that the stall warning light was flashing. Subsequently, the airplane entered an aerodynamic stall and spun into a canal. A review of a video taken by a witness corroborated the passenger's account.
Examination of the airframe and engine did not reveal any preaccident mechanical malfunctions or failures that would have precluded normal operation. Sound spectrum analysis of onboard video revealed that the engine rpm decreased by about 300 and then increased by about 300 twice but then remained steady near full power for about 6 seconds before impact. The reason for the rpm changes could not be determined.
Probable Cause: A partial loss of engine power during initial climb for reasons that could not be determined and the pilot's subsequent exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall.
Accident investigation:
 |
|
Sources:
NTSB
Location
Media:
Piper crashes in Bahia of San Juan, Porto Rico
— Planes Of Legend (@PlanesOfLegend) 5 juillet 2017
Una avioneta con cuatro tripulantes cae en la Bahía de San Juan https://t.co/WUPO9RT4AN pic.twitter.com/HtTScX4iaw
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 05-Jul-2017 02:09 | Geno | Added |
| 05-Jul-2017 12:04 | Iceman 29 | Updated [Aircraft type, Registration, Cn, Operator, Nature, Source, Embed code] |
| 05-Jul-2017 12:09 | Iceman 29 | Updated [Embed code, Narrative] |
| 05-Jul-2017 16:54 | harro | Updated [Registration, Source, Narrative] |
| 22-Apr-2020 17:00 | ASN Update Bot | Updated [Time, Operator, Country, Nature, Departure airport, Destination airport, Source, Embed code, Narrative, Accident report, ] |
| 22-Apr-2020 17:19 | harro | Updated [Aircraft type, Embed code, Narrative, Accident report, ] |
| 20-Sep-2023 06:54 | Ron Averes | Updated [[Aircraft type, Embed code, Narrative, Accident report, ]] |
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