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ASN Wikibase Occurrence # 131828
Last updated: 25 January 2021
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Date:31-AUG-1999
Time:12:15
Type:Silhouette image of generic P28A model; specific model in this crash may look slightly different
Piper PA-28-180
Owner/operator:Falls Aero, Inc,
Registration: N5172L
C/n / msn: 28-4458
Fatalities:Fatalities: 0 / Occupants: 4
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Peyton, CO -   United States of America
Phase: Take off
Nature:Private
Departure airport:00V
Destination airport:Laramie, WY (LAR)
Investigating agency: NTSB
Narrative:
Prior to takeoff, the pilot observed the winds to be out of the northwest at 10 knots, and he selected runway 33 for departure. He performed a density altitude calculation and it was determined to be 9,747 feet msl. Takeoff was normal, and the pilot climbed out at 80 mph. During initial climb, the airspeed dropped to 60 mph. He lowered the nose to gain airspeed and flew the aircraft under a set of power lines. Shortly thereafter, the aircraft impacted slightly inclining terrain. The four occupants exited the aircraft, and the airplane was subsequently consumed by fire. At 1154, the closest reporting weather facility located 10.4 nm to the southwest was reporting the winds to be from 110 degrees at 7 knots. At 1254, the winds were variable at 4 knots. Several pilots in the area reported encountering sudden windshift conditions near the time of the accident. According to calculated weight and balance data, the aircraft was slightly under maximum gross weight and within center of gravity limits at takeoff. There is no performance data in the Airplane Flight Manual for takeoffs above 7,000 feet density altitude.

Probable Cause: The pilot's loss of control resulting in inadvertent stall/mush during initial climb following takeoff. Factors were the unfavorable, sudden windshift conditions, the high density altitude, and the manufacturer's failure to provide adequate density altitude performance information in the Airplane Flight Manual.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X19499&key=1


Revision history:

Date/timeContributorUpdates
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
14-Dec-2017 08:48 ASN Update Bot Updated [Destination airport, Source, Narrative]

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