ASN Wikibase Occurrence # 506
Last updated: 1 September 2014
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:11-JUL-1999
Time:13:00
Type:Silhouette image of generic DIMO model; specific model in this crash may look slightly different
Hoffmann H36 Dimona
Owner/operator:Delftsche Studenten Aeroclub
Registration: PH-780
C/n / msn: 360151
Fatalities:Fatalities: 2 / Occupants: 2
Other fatalities:0
Airplane damage: Written off (damaged beyond repair)
Location:Joigny -   France
Phase: Initial climb
Nature:Private
Departure airport:Joigny
Destination airport:
Narrative:
Coming from Montargis, the pilot landed at Joigny. Witnesses outside the AD saw it take off again from runway 08. They saw the aircraft fly over an electric cable by a few metres then fly over the forest at a low height. According to the witnesses, the motorised glider then oscillated on the roll axis before crashing into the trees. It caught fire immediately. Examination of the wreckage showed that the propeller blades were set on u201Chigh pitchu201D. The aircraft's flight manual specified that takeoffs, landings and go-arounds must be performed with the propeller blades set at u201Clow pitchu201D. Due to ground effect, the aircraft was able to take off despite the low pitch propeller setting, inappropriate for low speeds. However, this configuration did not permit acceleration towards the first flight regime, especially as the aircraft had to cross an electric line. The high temperature, that reduced engine power, and possible downdraughts above the forest increased the power required for flight could have contributed to the loss of control.

Sources:
http://www.bea-fr.org/docspa/1999/ph-0990711a/htm/ph-0990711a.html
http://www.bea-fr.org/docspa/1999/ph-0990711a/pdf/ph-0990711a.pdf


Revision history:

Date/timeContributorUpdates
21-Jan-2008 10:00 ASN archive Added
27-May-2010 08:04 TB Updated [Other fatalities, Nature]
Number of views: 929

Corrections or additions? ... Edit this accident description