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20090509007219A

Accident · Destroyed
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FAA accident report · Amtr BAKENG DUCE · Ramona, CA · May 9, 2009

FAA Aviation Safety Information Portal

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Date
May 9, 2009 · 14:35 local
Place
Ramona, CA
Phase of flight
Maneuver
Operating rules
General operating rules (Part 91)
Damage
Destroyed
Aircraft
N86YP
NTSB investigation
NTSBWPR09FA234
Reported as
Amtr Bakengduce
People aboard
2
Fatal injuries
2
Other injuries
0
Pilot’s flight hours
1,450 total0 in this make and model0 in the last 90 days
N86YPRegistration cancelled Jan 17, 2018 · Upton Samuel L BAKENG DUCES/N 572 · Built 1986Airframe modelUpton Samuel L BAKENG DUCEEngine modelLycoming 0-290 series4 cycle

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) Pilot and passenger (also a pilot: commerical, instrument, CFI) departed Ramona airport, CA (krnm) at approximately 1400 PDT for a local pleasure flight. The plane was observed by several witnesses near the crash site,maneuvering at estimated altitudes of 1000 to 2000 ft. AGL, for ten to fifteen minutes before the crash. One witness (non pilot but with some aviation knowledge) said he observed the plane perform a few ninty-degree banked turns of 180 to 270 degrees change in direction. None of the witnesses interviewed, when asked specifically about aerobatic maneuvers, said they observed any rolls or loops; or anything more unconventional than the ninety-degree banked turns. Weather at the crash site was VMC with light but slightly gusty winds. All witnesses interviewed described failure of the aircraft wing in flight, prior to impact with the ground. No witness actually saw the wing fail. All said they saw the wing folded back, still attached to the plane, as it spun vertically to the ground. Preliminary investigation of the circumstances indicates probable structural failure of the aircraft wing prior to the crash. This report amended 05/26/2009 from original report number:WP09LA234. (Tap - WP09)

As the FAA filed it

(-23) PILOT AND PASSENGER (ALSO A PILOT: COMMERICAL, INSTRUMENT, CFI) DEPARTED RAMONA AIRPORT, CA (KRNM) AT APPROXIMATELY 1400 PDT FOR A LOCAL PLEASURE FLIGHT. THE PLANE WAS OBSERVED BY SEVERAL WITNESSES NEAR THE CRASH SITE,MANEUVERING AT ESTIMATED ALTITUDES OF 1000 TO 2000 FT. AGL, FOR TEN TO FIFTEEN MINUTES BEFORE THE CRASH. ONE WITNESS (NON PILOT BUT WITH SOME AVIATION KNOWLEDGE) SAID HE OBSERVED THE PLANE PERFORM A FEW NINTY-DEGREE BANKED TURNS OF 180 TO 270 DEGREES CHANGE IN DIRECTION. NONE OF THE WITNESSES INTERVIEWED, WHEN ASKED SPECIFICALLY ABOUT AEROBATIC MANEUVERS, SAID THEY OBSERVED ANY ROLLS OR LOOPS; OR ANYTHING MORE UNCONVENTIONAL THAN THE NINETY-DEGREE BANKED TURNS. WEATHER AT THE CRASH SITE WAS VMC WITH LIGHT BUT SLIGHTLY GUSTY WINDS. ALL WITNESSES INTERVIEWED DESCRIBED FAILURE OF THE AIRCRAFT WING IN FLIGHT, PRIOR TO IMPACT WITH THE GROUND. NO WITNESS ACTUALLY SAW THE WING FAIL. ALL SAID THEY SAW THE WING FOLDED BACK, STILL ATTACHED TO THE PLANE, AS IT SPUN VERTICALLY TO THE GROUND. PRELIMINARY INVESTIGATION OF THE CIRCUMSTANCES INDICATES PROBABLE STRUCTURAL FAILURE OF THE AIRCRAFT WING PRIOR TO THE CRASH. THIS REPORT AMENDED 05/26/2009 FROM ORIGINAL REPORT NUMBER:WP09LA234. (TAP - WP09)

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB WPR09FA234Accident · 2 fatalField investigationFinal reportRamona, CAAn in-flight separation of the right wing, which resulted from the pilot's performance of a maneuver that produced aerodynamic loads that exceeded the wing spar’s degraded strength. The wing spar strength degradation was due to the builder's failure to comply…May 9, 2009 · Substantial damage