# Accident 20010307003339A: Cessna 172S, Keene, NH, March 7, 2001

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: March 7, 2001, 13:10 local time
- Place: Keene, NH
- Airport: Dillant-Hopkins
- Damage: Substantial damage
- Phase of flight: Roll-Out (Fixed Wing)
- Operating rules: General operating rules (Part 91)
- Location: 42.9491° N, 72.2890° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=42.9491&lon=-72.2890&mi=10
- Aircraft: N574SP, a cancelled registration (https://openairdocs.org/deregistered/N574SP-2011-02-25) (OpenAirDocs)
- Registry model: Cessna 172S (registry code 2072439, https://openairdocs.org/model/cessna-172s) (OpenAirDocs)
- Registry engine: Lycoming I0360 SER A&C (registry code 41511, https://openairdocs.org/engine/lycoming-i0360-ser-a-c) (OpenAirDocs)
- Reported make and model: CESSNA 172S
- Reported engine: CONT IO360*
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 92 total, 92 in this make and model, 21 in the last 90 days
- NTSB investigation: [NTSB NYC01LA083](https://openairdocs.org/ntsb/NYC01LA083) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20010307003339A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) DURING LANDING ROLL ON RUNWAY 02 AT KEENE AIRPORT, THE PILOT ENCOUNTERED A PATCH OF SLUSH ON THE RUNWAY APPARENTLY CAUSED BY MELTING SNOW FROM THE SNOW-CLEARING OPERATIONS BEING CONDUCTED AT THE TIME. THE PILOT STATED THAT HIS TOUCH DOWN WAS ON THE CENTERLINE APPROX. 500 FEET DOWN THE RUNWAY. AS HE WAS ROLLING OUT THE AIRCRAFT BEGAN VEERING TO THE LEFT. BEFORE HE REALIZED WHAT HAD HAPPENED THE AIRCRAFT WAS UNCONTROLLABLE AND BEGAN SLIDING SIDEWAYS AFTER AN ABRUPT LEFT GROUND-LOOP. THE AIRCRAFT SLID SIDE-WAYS APPROX. 50 FEET. THE RIGHT WING CONTACTED THE RUNWAY FROM THE ROLLING MOTION CAUSING THE OUTBOARD SECTION TO BE BENT UPWARD AT APPROX. 60 DEGREE ANGLE. THE AIRCRAFT CAME TO REST IN A SNOW BANK ON THE LEFT SIDE OF THE RUNWAY. AT THE TIME OF THE ACCIDENT THERE WAS A NOTAM IN EFFECT FOR PATCHES OF PACKED SNOW AND ICE ON THE RUNWAY (RUNWAY 02/20). THERE WAS NO NOTAM FOR THE SLUSH ON THE RUNWAY BUT WEATHER CONDITIONS AT THE TIME APPEARED TO FAVOR ITS FORMATION (1 DEGREE CENTIGRADE, SNOW BEING BLOWN TOWARDS THE RUNWAY FROM THE SNOW-CLEARING OPERATION, AND WIND FROM 360 DEGREES AT 6 KNOTS). (.4) THE PILOT FLEW A NORMAL APPROACH, AND LANDED THE AIRPLANE, WITH THE TH              ROTTLE CLOSED, ON A RUNWAY WITH PATCHES OF SLUSHY SNOW AND ICE, AND SOME BLOWING DRY SNOW. THE AIRPLANE TOUCHED DOWN ON CENTERLINE, ABOUT 60 KNOTS, AND THE PILOT KEPT HIS FEET OFF THE BRAKES DURING ROLLOUT. ABOUT 500 FEET INTO THE ROLLOUT, THE AIRPLANE BEGAN TO YAW, THEN SLOWLY VEER AND SKID TO THE LEFT. THE PILOT ATTEMPTED TO STRAIGHTEN THE AIRPLANE BY INCREASING RIGHT RUDDER PRESSURE. HE ALSO CONSIDERED ABORTING THE LANDING, BUT GIVEN THE AIRPLANE'S SLOW SPEED, AND ITS PROXIMITY TO A 4-FOOT SNOW BANK, HE DECIDED AN ABORT WOULD BE UNSUCCESSFUL. THE AIRPLANE CONTINUED TO VEER TO THE LEFT, AND HIT THE SNOW BANK AT APPROXIMATELY A 30-DEGREE ANGLE, ABOUT 30 MILES PER HOUR. WINDS, ABOUT THE TIME OF THE ACCIDENT, WERE FROM APPROXIMATELY 15 DEGREES LEFT OF THE RUNWAY, AT 5 KNOTS. THE PILOT HAD 92 HOURS OF FLIGHT TIME, WITH PREVIOUS EXPERIENCE LANDING ON CONTAMINATED RUNWAYS.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB NYC01LA083](https://openairdocs.org/ntsb/NYC01LA083), Mar 7, 2001: Cessna 172S (N574SP), Keene, NH, substantial damage. Probable cause: The pilot's failure to maintain directional control during the landing roll. A factor included the patchy snow on the runway.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft 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. For accidents, the NTSB's own investigation is the fuller record.

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