# NTSB DEN91LA084: Cessna 182Q, N94596, Lafayette, CO, June 16, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 16, 1991, 12:00 local (18:00 UTC)
- Place: Lafayette, CO
- Coordinates: 39.990299, -105.090965 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9903&lon=-105.0910&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report May 5, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18098
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN91LA084
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18098/pdf
- Page: https://openairdocs.org/ntsb/DEN91LA084

## Probable cause

THE PIC'S ABRUPT TOUCHDOWN.  FACTORS WERE:  APPROACH REFERENCE SPEED NOT MAINTAINED, PROPER DESCENT RATE NOT MAINTAINED BY THE PIC AND INATTENTION BY THE DESIGNATED EXAMINER.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Hard landing, landing - flare/touchdown
  - airspeed(vref) - not maintained, pilot in command (contributing factor)
  - inattentive, designated examiner (contributing factor)
  - proper descent rate - not maintained, pilot in command (contributing factor)
  - touchdown - abrupt, pilot in command (cause)

## Analysis

THE STUDENT PILOT WAS RECEIVING A PRIVATE PILOT RATING RIDE FROM A DESIGNATED EXAMINER.  WHILE DEMONSTRATING A SHORT FIELD LANDING, THE DESIGNEE ALLOWED THE SPEED TO DETERIORATE FOLLOWED BY EXCESSIVE SINK RATE WHICH RESULTED IN A HARD LANDING.  THE DESIGNATED EXAMINER TOOK NO PREVENTATIVE ACTION.

## Aircraft

- Registration: [N94596](https://openairdocs.org/aircraft/N94596), registered now, S/N 18266455, built 1978 (OpenAirDocs)
- Reported make and model: CESSNA 182Q
- Registry model: [Cessna 182Q](https://openairdocs.org/model/cessna-182q) (registry code 2072732) (OpenAirDocs)
- Registry engine: [Continental O-470 series](https://openairdocs.org/engine/continental-o-470-series) (registry code 17026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 18266455
- Engines: CONTINENTAL O-470-V 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 91
- Operator: Denver Air Center
- Departed: BJC, BROOMFIELD, CO
- Airport: 48V, Tri-County, runway 15, 5,400 × 65 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; student; medical: class 3, valid medical--no waivers/lim.; flight hours: 72 total, 50 in this make and model, 37 in the last 90 days, 19 in the last 30 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 11 knots
- Visibility: 60 statute miles
- Lowest ceiling: 18,000 ft broken
- Temperature: -0 °F, dew point -0 °F
- Observed at: BJC, 15 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 (OpenAirDocs).

- [Accident 19910616040919A](https://openairdocs.org/incident/19910616040919A), Jun 16, 1991: Cessna 182Q, Erie, CO, Substantial damage. Slow in short final on short field demo. Cautioned by examiner. Shoved nose down impacting nose first.

## Other investigations on N94596 (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 LAX94LA067](https://openairdocs.org/ntsb/LAX94LA067), Dec 2, 1993: Cessna 182Q (N94596), Grand Canyon, AZ, substantial damage. Probable cause: the pilot's use of an excessive approach airspeed and an improper bounced landing recovery technique.

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.

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