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ASN Wikibase Occurrence # 227679
Last updated: 8 June 2020
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Type:Silhouette image of generic A5 model; specific model in this crash may look slightly different
Icon A5
Registration: N663BA
C/n / msn: 00004
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Littlefield Lake, Isabella County, MI -   United States of America
Phase: Initial climb
Departure airport:Littlefield Lake, MI
Destination airport:Littlefield Lake, MI
Investigating agency: NTSB
The pilot was conducting a sales demonstration flight with a pilot-rated passenger on board. He reported that, when he started the takeoff run from a lake, three small wakes helped propel the airplane into the air. He stated that the airplane took off on the first attempt, the takeoff was normal, and "there was nothing wrong with the [air]plane at all." He added that, after initiating a 10° right turn to stay over the lake, it felt like the airplane "hit a wall." The airplane then descended rapidly, clipped a tree, and impacted water, which resulted in substantial damage to the fuselage and wings.
The pilot-rated passenger said that it took four takeoff attempts to get airborne and that the airplane felt very sluggish and acted as if it did not want to come off the water.
Postaccident weight and balance calculations revealed that the airplane was about 57 lbs over its maximum gross weight and outside of the weight and center of gravity limits contained in the pilot's operating handbook. Data retrieved from the airplane's onboard digital-to-analogue converter were consistent with three takeoff attempts, with the airplane becoming airborne on the third attempt. A review of video of the accident flight from witnesses showed the airplane in a nose-high attitude with the flaps extended as it approached trees during the initial climb. As the airplane reached about the midpoint of a stand of trees, the angle of attack appeared to increase and the nose dropped. The right wing then lowered and impacted one of the trees.

Probable Cause: The pilot's improper decision to operate the airplane in exceedance of the airplane manufacturer’s operating limitations, which led to an aerodynamic stall. Contributing to the accident was the pilot's improper decision to continue attempting the takeoff after two failed attempts.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 10 months
Download report: Final report


Photo: NTSB

Revision history:

27-Jul-2019 23:23 Geno Added
27-Jul-2019 23:30 Geno Updated [Time, Phase, Departure airport, Destination airport, Source, Narrative]
27-Jul-2019 23:51 Captain Adam Updated [Registration, Cn, Operator, Source]
28-Jul-2019 00:38 Captain Adam Updated [Source]
29-Jul-2019 10:57 Iceman 29 Updated [Embed code]
29-Jul-2019 10:59 Iceman 29 Updated [Source, Embed code, Damage]
29-Jul-2019 11:05 Iceman 29 Updated [Phase, Embed code]
29-Jul-2019 11:06 Iceman 29 Updated [Embed code]
29-Jul-2019 18:25 Iceman 29 Updated [Registration, Source, Embed code]
08-Jun-2020 08:40 ASN Update Bot Updated [Time, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative, Accident report, ]
08-Jun-2020 17:30 harro Updated [Departure airport, Destination airport, Source, Embed code, Narrative, Photo, Accident report, ]
08-Jun-2020 18:48 harro Updated [Embed code, Accident report, ]

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