NYC01LA197

NTSB accident investigation · Palmer/Wilgus Fokker F1 · Rhinebeck, NY · July 29, 2001

Accident · Minor injuriesLimited investigationFinal report
Date
July 29, 2001, 16:10 local (20:10 UTC)
Place
Rhinebeck, NY
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N220TPPalmer/Wilgus Fokker F1
Weather
Visual (VMC) · Day
Status
Completed · report June 18, 2002
Report
Approved by Office Director
Parties
FAA
FAA report
20010729022159A
Case key
52898

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot's failure to maintain directional control while landing, resulting in an inadvertent ground-loop. A factor related to the accident was the crosswind conditions.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - roll
Weather condition - crosswindFactor
Directional control - not maintainedPilot in commandCause
Ground loop/swerve - inadvertentPilot in command

Analysis

While landing, the airplane "ballooned" upward before touching down. The pilot added power and the airplane settled down onto the runway. As the airplane was rolling out, it suddenly ground looped to the left side of the runway. The pilot regained control of the airplane by turning to the right. During the turn, the left wing dug into the ground and the airplane nosed over, before coming to rest inverted. The winds reported at a nearby airport, about the time of the accident were, from 130 degrees at 10 knots.

Factual narrative

On July 29, 2001, about 1610 eastern daylight time, a homebuilt Fokker F-1, N220TP, was substantially damaged while landing at the Old Rhinebeck Airport, Rhinebeck, New York. The certificated commercial pilot sustained minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed for the local personal flight conducted under 14 CFR Part 91.

According to the pilot, as he was landing on the south runway, a 2,200-foot long, 75-foot wide, grass runway, the airplane "ballooned" upward before touching down. The pilot added power and the airplane settled down onto the runway. As the airplane was rolling out, it suddenly ground looped to the left side of the runway. The pilot regained control of the airplane by turning to the right. During the turn, the left wing dug into the ground and the airplane nosed over, before coming to rest inverted.

The pilot added that the airplane's landing gear consisted of skids, and no brakes were installed.

According to the Federal Aviation Administration Airplane Flying Handbook, "The pilot must be alert for directional control difficulties immediately upon and after touchdown due to the ground friction on the wheels. The friction creates a pivot point on which a moment arm can act. Loss of directional control may lead to an aggravated, uncontrolled, tight turn on the ground, or a ground loop. The combination of centrifugal force acting on the center of gravity (CG) and ground friction of the main wheels resisting it during the ground loop may cause the airplane to tip or lean enough for the outside wingtip to contact the ground. This may even impose a sideward force which could collapse the landing gear."

The winds reported at a nearby airport, about the time of the accident were, from 130 degrees at 10 knots.

Aircraft

Registration
N220TP
Reported as
Palmer/Wilgus Fokker F1
Category
Airplane, amateur-built
Serial number
F1-103
Airframe hours
166
Engine
Continental W-670-6A, 220 hp, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Rhinebeck Aerodrome Museum
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · June 2, 2001 · 4 hours before
Departed
NY94 · Rhinebeck, NY
Airport
NY94 · Old Rhinebeck Airport, runway S, 2,200 × 75 ft, grass/turf

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
40
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Last flight review
March 19, 2001
Seat
Center
Flight hours
526 total · 31 in this make and model · 400 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 10 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
77 °F, dew point 55 °F
Altimeter
30.13 inHg
Observed at
POU, 11 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.