NYC99LA117
1999-05-21 · LEESBURG, Virginia, United States · None · 1 aircraft · Status: Completed
Airport JYO
Current FAA registration · N78659
- Make / Model
- PIPER PA-11
- Engine
- CONT MOTOR C90 SERIES (95 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 19550812
- ADS-B equipped
- Yes — Mode-S AAA9F9
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot-in-command's (CFI) failure to maintain control of the airplane.
Factual narrative
On May 21, 1999, about 1412 Eastern Daylight Time, a Piper PA-11, N78659, was substantially damaged during a landing at Leesburg Municipal/Godfrey Field Airport (JYO), Leesburg, Virginia. The certificated flight instructor and commercial pilot were not injured. Visual meteorological condition prevailed for the flight that originated from York Airport, York, Pennsylvania. No flight plan was filed for the instructional flight conducted under 14 CFR Part 91. The instructor was introducing the commercial pilot to tailwheel operations, and the commercial pilot had accomplished approximately six landings in the airplane. The instructor stated that during the next landing, they experienced a sudden crosswind, followed by a tailwind. The airplane stalled, bounced, and traveled off the left side of the runway. The instructor further stated that he took control of the airplane, prevented a ground loop, but was unable to keep the airplane on the runway. The airplane struck a runway sign, causing substantial damage to the empennage. The commercial pilot stated "...upon touchdown, the plane veered sharply to the left, going onto the grass and hitting a sign with the horizontal stabilizer. There was a slight crosswind on final, touchdown was normal, then the wind appeared to shift to a tailwind." Examination of the wreckage by a Federal Aviation Administration Inspector did not reveal any pre-impact mechanical malfunctions, nor did the pilots report any. The approach was flown to Runway 35, a 5,500 foot long, 100 foot wide, asphalt runway. The reported winds at JYO, at 1400, were from 270 degrees at 5 knots. The certified flight instructor was introducing the commercial pilot to tailwheel operations. The commercial pilot had accomplished approximately six landings in the airplane. During the next landing, the pilots experienced a crosswind, followed by a tailwind. The airplane stalled, bounced, and traveled off the left side of the runway. The instructor stated that he took control of the airplane, prevented a ground loop, but was unable to keep the airplane on the runway. The airplane struck a runway sign, causing substantial damage to the empennage. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1999_NYC99LA117.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
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Related research
Matched on aircraft type or causal vocabulary (stall). All research papers
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