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ASN Wikibase Occurrence # 40417
Last updated: 4 September 2019
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Date:11-SEP-1983
Time:14:25
Type:Silhouette image of generic P68 model; specific model in this crash may look slightly different
Partenavia P.68C
Owner/operator:Windward Aviation
Registration: N29561
C/n / msn: 266
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Plainview, TX -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Nature:Demo/Airshow/Display
Departure airport:Plainview, TX
Destination airport:Plainview, TX
Investigating agency: NTSB
Narrative:
THE PLT WAS EXECUTING A HIGH SPEED PASS OVER THE RWY AT ABOUT 250 FT AGL. THE PLT THEN BEGAN A RAPID PULL-UP & BOTH WINGS SEPARATED JUST OUTBOARD OF THE ENG NACELLES. RECONSTRUCTION OF THE SEQUENCE FROM A VIDEOTAPE REVEALED THAT THE ACFT'S SPEED AT THE TIME OF THE WING SEPARATIONS WAS 220 KTS. VNE FOR THE ACFT IS 193 KTS. IT WAS CALCULATED THAT, AT 220 KTS & AN 8 DEG NOSE-UP PITCH, THE 'G' LOAD AT THE TIME OF THE WING SEPARATIONS WOULD HAVE BEEN 8.3 G'S.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:

IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND
OVERCONFIDENCE IN AIRCRAFT'S ABILITY..PILOT IN COMMAND
AIRSPEED..EXCEEDED..PILOT IN COMMAND
WING..OVERLOAD
DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

Contributing Factors:
WING..FAILURE,TOTAL
WING..SEPARATION

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001214X44523


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
10-Aug-2017 17:05 harro Updated [Nature, Departure airport, Destination airport, Source, Embed code, Narrative]

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