# NTSB SEA06CA144: Piper PA-11, N4706H, Turner, MT, July 15, 2006

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: July 14, 2006, 20:40 local (Jul 15, 2006, 02:40 UTC)
- Place: Turner, MT
- Coordinates: 48.899166, -108.526107
- Nearby events: https://openairdocs.org/map.md?lat=48.8992&lon=-108.5261&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 31, 2006
- Report: Approved by Office Director
- NTSB case key (mKey): 64141
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA06CA144
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/64141/pdf
- Page: https://openairdocs.org/ntsb/SEA06CA144

## Probable cause

The passenger's inadvertent activation of the airplane's brakes during the landing roll, resulting in the pilot's loss of control and subsequent nose over.  A factor was the pilot's inadequate preflight planning/preparation by not briefing the passenger about the brake peddle position, and the importance of not interfering with the operation of the brakes.

## 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
  - brakes(normal) - inadvertent activation, passenger (cause)
  - aircraft control - not maintained, pilot in command
  - preflight planning/preparation - inadequate, pilot in command (contributing factor)
- Nose over, taxi

## Analysis

With the pilot occupying the rear seat and the passenger the front seat, a normal landing was completed.  During the rollout while the airplane was decelerating to about 20 miles per hour, the airplane's brakes locked up resulting in the aircraft nosing over and coming to rest inverted.  A post accident discussion between the pilot and his passenger revealed that the passenger had his feet on the airplane's brakes during the landing roll, resulting in the nose over.  The pilot stated that the accident might have been prevented if he had described more thoroughly the brake pedal position and how important it is to stay off them while landing and taxiing.  Both wings, the rudder and the fuselage sustained substantial damage.

## Factual narrative

With the pilot occupying the rear seat and the passenger the front seat, a normal landing was completed.  During the rollout while the airplane was decelerating to about 20 miles per hour, the airplane's brakes locked up resulting in the aircraft nosing over and coming to rest inverted.  A post accident discussion between the pilot and his passenger revealed that the passenger had his feet on the airplane's brakes during the landing roll, resulting in the nose over.  The pilot stated that the accident might have been prevented if he had described more thoroughly the brake pedal position and how important it is to stay off them while landing and taxiing.  Both wings, the rudder and the fuselage sustained substantial damage.

## Aircraft

- Registration: [N4706H](https://openairdocs.org/aircraft/N4706H), registered now, S/N 11496, built 1948 (OpenAirDocs)
- Reported make and model: Piper PA-11
- Registry model: [Piper PA-11](https://openairdocs.org/model/piper-pa-11) (registry code 7101102) (OpenAirDocs)
- Registry engine: [Continental C85 series](https://openairdocs.org/engine/continental-c85-series) (registry code 17008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 11-496
- Engines: Lycoming O-235 reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Scott E. Snider
- Registered owner: Brian S. Leonard
- Airworthiness certificate: Standard, Normal
- Departed: 9U0, Turner, MT
- Destination: Turner, MT
- Airport: NONE, Harmon airstrip, runway 18

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2; flight hours: 4,650 total, 720 in this make and model, 120 in the last 90 days, 35 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 20060714013919A](https://openairdocs.org/incident/20060714013919A), Jul 14, 2006: Piper PA11, Turner, MT, Substantial damage. (-23) The pilot landed and rolled 150 to 175 feet when the wheels started skidding and the aircraft nosed over. The front seat passenger inadvertently actuated…

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.