# NTSB DEN92LA015: Beech V35, N9449S, Erie, CO, December 10, 1991

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: December 10, 1991, 15:30 local (22:30 UTC)
- Place: Erie, CO
- Coordinates: 40.019763, -105.040107 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=40.0198&lon=-105.0401&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report April 8, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18184
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN92LA015
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18184/pdf
- Page: https://openairdocs.org/ntsb/DEN92LA015

## Probable cause

AN INADVERTENT GEAR UP LANDING WHEN THE PILOT IN COMMAND AND DESIGNATED EXAMINER FAILED TO USE PROPER PROCEDURES.  A FACTOR WAS:  FAILURE OF THE LANDING GEAR EXTENSION/RETRACTION MOTOR.

## Sequence of events

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

- Gear not extended, approach
  - landing gear,normal retraction/extension assembly - failure,total (contributing factor)
  - procedures/directives - not followed, pilot in command (cause)
- Gear not extended, landing
  - wheels up landing - inadvertent, pilot in command (cause)

## Analysis

THE DESIGNATED EXAMINER WAS GIVING THE STUDENT PILOT HIS PRIVATE PILOT EXAMINATION FLIGHT CHECK.  DURING A SOFT FIELD LANDING DEMONSTRATION BY THE STUDENT, THE GEAR WAS LOWERED AND THE GEAR HANDLE WAS VERIFIED DOWN BY BOTH PILOTS. HOWEVER, NEITHER PILOT VERIFIED THE GEAR VIA THE GEAR LIGHT. THE GEAR WARNING SOUNDED DURING FINAL APPROACH, BUT BOTH PILOTS MISIDENTIFIED IT AS A STALL WARNING.  THE AIRCRAFT WAS LANDED WITH THE GEAR UP AND THE GEAR DOORS PARTIALLY OPENED.  THE LANDING GEAR MOTOR HAD FAILED AND THE CIRCUIT BREAKER WAS POPPED.

## Aircraft

- Registration: N9449S (not matched to a registry record)
- Reported make and model: BEECH V35
- Category: Airplane
- Serial number: D-8069
- Engines: CONTINENTAL IO-520-B 285 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Robert D. Philips
- Departed: BJC, BROOMFIELD, CO
- Airport: 48V, Tri-County, runway 15, 5,400 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; student; medical: class 3, valid medical--w/ waivers/lim; flight hours: 89 total, 75 in this make and model, 89 in the last 90 days, 63 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 150° at 10 knots
- Visibility: 35 statute miles
- Lowest ceiling: 16,000 ft overcast
- Temperature: -0 °F, dew point -0 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Incident 19911210058419I](https://openairdocs.org/incident/19911210058419I), Dec 10, 1991: Beech V35, Erie, CO, Minor damage. Gear horn mistaken for stall warning on approach. Aborted. Gear handle left down. Landed gear up. Actuator failed.

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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