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ASN Wikibase Occurrence # 199146
Last updated: 21 September 2020
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Time:12:26 LT
Type:Silhouette image of generic PTS2 model; specific model in this crash may look slightly different
Pitts S-2B Special
Owner/operator:Sameiet LN-PTS (partnership)
Registration: LN-PTS
C/n / msn: 5156
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Near Ekeberg school West of Holmestrand -   Norway
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Oslo-Sandefjord Airport (TRF/ENTO)
Destination airport:Oslo-Sandefjord Airport (TRF/ENTO)
Investigating agency: AIBN
On 22 August 2017 the commander and a passenger flew from Sandefjord airport Torp, Norway (ENTO) to the Holmestrand area with Pitts S-2B, LN-PTS.
From an altitude of approximately 1600 ft (AGL), the airplane was flown into a maneuver which resulted in a sudden change in the airplane’s position by making a transition from horizontal flight to an approximate vertical climb to approximately 2900 ft (AGL). The maneuver was thus, by definition, aerobatic flying.

At the top of the vertical increase with full engine power, the flight speed decreased until the airplane stood still in the air. The plane then fell back and entered a left backspin. Until control of the airplane was lost, the maneuver appeared as if it was intended to perform a stall turn/hammerhead maneuver. Witness statements and video recording indicate that there was no sign of the commander being close to regaining control of the airplane from the backspin. The airplane collided with the ground and both on board died.

The commander had recently conducted self-familiarization on LN-PTS. He had limited experience with the airplane model. The commander had neither sufficient nor required rating to perform aerobatic flying. The Accident Investigation Board Norway (AIBN) considers that the commander in particular had insufficient skills to master a hammerhead/stall turn, which in addition resulted as an inverted spin, in which visual orientation is challenging.


Accident investigation:
Investigating agency: AIBN
Status: Investigation completed
Download report: Final report

Revision history:

22-Aug-2017 12:52 Whiteshark Added
22-Aug-2017 12:53 harro Updated [Aircraft type, Narrative]
22-Aug-2017 20:32 Iceman 29 Updated [Time, Other fatalities, Phase, Departure airport, Destination airport, Source, Embed code, Narrative]
24-Aug-2017 19:58 whiteshark Updated [Aircraft type, Registration, Location, Source, Embed code]
25-Aug-2017 06:05 Anon. Updated [Aircraft type, Registration]
25-Aug-2017 20:36 asyl Updated [Cn, Source]
26-Aug-2017 06:06 asyl Updated [Operator, Narrative]
11-Sep-2020 16:56 harro Updated [Time, Phase, Departure airport, Narrative, Accident report, Accident report, ]
11-Sep-2020 16:56 harro Updated [Destination airport, Accident report, ]

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