# NTSB DEN06CA071: Piper PA-22-150, N6946B, Rangely, CO, May 3, 2006

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: May 3, 2006, 10:15 local (16:15 UTC)
- Place: Rangely, CO
- Coordinates: 40.093887, -108.762779
- Nearby events: https://openairdocs.org/map.md?lat=40.0939&lon=-108.7628&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report August 29, 2006
- Report: Approved by Office Director
- NTSB case key (mKey): 63623
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN06CA071
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/63623/pdf
- Page: https://openairdocs.org/ntsb/DEN06CA071

## Probable cause

the pilot's inadvertent application of the brake during the landing roll.  A contributing factor was the pilot's failure to maintain directional control and the flight instructor's inadequate supervision during the landing.

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, dual student (contributing factor)
  - brakes(normal) - inadvertent activation, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (contributing factor)
- Nose over, landing - roll
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - runway

## Analysis

During a wheel landing touchdown approximately 1000 feet from the approach end of the runway, the aircraft swerved slightly to the left.  The student pilot applied right rudder and the airplane "over-corrected to the right."  During an attempt to apply rudder to correct back to the left, the student pilot inadvertently applied the left brake.  The airplane nosed forward "before any further correction could be made" and the propeller contacted the runway.  Subsequently, the airplane nosed over and came to rest inverted.

## Factual narrative

According to the flight instructor, during a wheel landing touchdown approximately 1000 feet from the approach end of runway 6, the aircraft swerved slightly to the left.  The student pilot applied right rudder and the airplane "over-corrected to the right."  During an attempt to apply rudder to correct back to the left, the student pilot inadvertently applied the left brake.  The airplane nosed forward "before any further correction could be made" and the propeller contacted the runway.  Subsequently, the airplane nosed over and came to rest inverted.  The flight instructor and student were not injured.  The instructor reported the sky was clear and the wind was from approximately 040 degrees at 07 knots.

## Aircraft

- Registration: [N6946B](https://openairdocs.org/deregistered/N6946B-2009-01-15), registration cancelled 2009-01-15, S/N 22-4226, built 1956 (OpenAirDocs)
- Reported make and model: Piper PA-22-150
- Registry model: [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150) (registry code 7102210) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-4226
- Engines: Lycoming O-360-A4A reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: David L. Cole
- Airworthiness certificate: Standard, Normal
- Departed: 4V0, Rangely, CO
- Destination: 4V0
- Airport: 4V0, Rangely, runway 6

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Flight instructor; age 59; flight instructor, airline transport; airplane ratings: multi-engine land, single-engine land; medical: class 2; flight hours: 22,000 total, 150 in this make and model, 80 in the last 90 days, 80 in the last 30 days
- Pilot; age 21; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1; flight hours: 630 total, 1 in this make and model, 69 in the last 90 days, 21 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day

## 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 20060503005419A](https://openairdocs.org/incident/20060503005419A), May 3, 2006: Piper PA22150, Rangley, CO, Substantial damage. (-23) While landing at rangely Colorado (4V0) on 05-03-2006, 1045 local time, civil aircraft N6946B, a Piper PA-22, piloted by [privacy data omitted] nosed…

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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