CHI99LA071 · Cessna 172R
Cessna 172R · Accident: loss of control on ground/water during landing
From Spirit of St Louis Airport (SUS) to an unrecorded destination
Event
- NTSB case
- CHI99LA071
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Completed
- API-reported fatalities
- 0 · all aircraft and ground
- Ground fatalities
- 0
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- General aviation
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Visual Meteorological Cond
Cessna 172R
- Aircraft type
- Cessna 172
- Category
- Airplane
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- N4172P
- Operator
- Unknown
- Onboard fatalities
- Unknown
- Route
- From Spirit of St Louis Airport (SUS)To not recorded
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Part 91: General Aviation
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Landing · landing roll
- First occurrenceThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Loss of control on ground/water
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Substantial
Cause areas
- Pilot in command(cfi) › Aircraft control, not maintained
Approximate · Coordinates as recorded by the NTSB; no uncertainty radius is established.
NTSB narrative
The instructor pilot said that he took control of the airplane approximately 200 feet prior to the taxiway and began applying brake pressure to slow down. As the airplane approached the taxiway, the instructor said that the airplane 'gradually deviated to the left of the runway centerline.' The instructor said that he applied right rudder pedal and then the right brake. There was no braking response. The instructor said that he 'applied full right brake' and found that 'the right brake had no response or pressure and could be applied to its full limit with no resistance felt.' The airplane's left main gear departed the edge of the runway and rolled into the snow. The airplane pivoted counter-clockwise until the nose gear contacted a 2 foot thick pile of snow. The airplane tipped forward and right onto the nose gear and right main landing gear causing the right wing to strike the ground. Examination of the airplane revealed no anomalies.
Probable cause
the instructor pilot's failure to maintain aircraft control. Factors contributing to this accident were the snow covered grassy field area along the side of the runway and the pile of snow.
Verbatim NTSB analysis and probable cause from the NTSB dataset
Sources
NTSB record CHI99LA071
- Event ID
- 20001204X00030
- Case number
- CHI99LA071
- Dataset
- historical-pre2008
- Source SHA-256
- 89e2df6d848e7ab3b42e7d7c7a03ff403303057a26ca04c95b3ea67201c3ce74
Source notes (4)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: local date, investigation status. Values present in the bulk record are kept.
- The date is the local date; the NTSB stores the UTC date 1999-01-20.
- API snapshot SHA-256: 8f7a3b10e43d994fee0a967a3e552e4a396bf660c98a10a55f87519c2d2e7d8b; retrieved 2026-09-22T15:58:44.393Z.