- Date
- September 3, 2016, 10:56 local (17:56 UTC)
- Place
- Mazama, WA
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N110MDDormaier Monte R Baby Great Lakes
- Defining event
- Takeoff: Runway excursion
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 18, 2017
- Report
- Approved by Office Director
- NTSB office
- General Aviation Accidents
- Parties
- FAA
- FAA report
- 20160903016799A
- Case key
- 94009
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot’s failure to maintain directional control during the takeoff roll, which resulted in a runway excursion.
Findings · 4
NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Analysis
The Federal Aviation Administration (FAA) Aviation Safety Inspector that responded to the accident site reported that the pilot of the experimental, amateur built, tailwheel landing gear-equipped bi-plane reported to the inspector, that during the takeoff roll the bi-plane drifted off the left side of the turf and gravel runway. The pilot reported that after he had completed his engine run-up and all indications were normal, he lightly applied power and began his takeoff roll from a concrete pad at the approach end of the runway. He reported to the inspector that the bi-plane began to drift to the left and he did not feel as though he had rudder authority, so he added more power with the intent to increase the airflow over the rudder, but the torque from the added power exacerbated the loss of control. The bi-plane drifted further left, exited the runway, and struck a post that supported a satellite dish and subsequently struck a tree. The bi-plane sustained substantial damage to the four wings and the fuselage. The pilot reported to the inspector that in hindsight it would have been better to abort the takeoff. The FAA Inspector reported that during the airplane examination he did not find any evidence of aircraft system or component failure prior to the impact. The NTSB Investigator-in-charge attempted to contact the pilot on multiple occasions to no avail. The pilot did not submit the NTSB Form 6120.1.
Factual narrative
The Federal Aviation Administration (FAA) Aviation Safety Inspector that responded to the accident sight reported that the pilot of the experimental, amateur built, tailwheel landing gear-equipped bi-plane reported to the inspector, that during the takeoff roll the bi-plane drifted off the left side of the turf and gravel runway. The pilot reported that after he had completed his engine run-up and all indications were normal, he lightly applied power and began his takeoff roll from a concrete pad at the approach end of the runway. He reported to the inspector that the bi-plane began to drift to the left and he did not feel as though he had rudder authority, so he added more power with the intent to increase the airflow over the rudder, but the torque from the added power exacerbated the loss of control. The bi-plane drifted further left, exited the runway, and struck a post that supported a satellite dish and subsequently struck a tree. The bi-plane sustained substantial damage to the four wings and the fuselage. The pilot reported to the inspector that in hindsight it would have been better to abort the takeoff. The FAA Inspector reported that during the airplane examination he did not find any evidence of aircraft system or component failure prior to the impact. The NTSB Investigator-in-charge attempted to contact the pilot on multiple occasions to no avail. The pilot did not submit the NTSB Form 6120.1.
Aircraft
- Registration
- N110MD
- Reported as
- Dormaier Monte R Baby Great Lakes (NO SERIES)
- Category
- Airplane, amateur-built
- Serial number
- 7704-A-637-B
- Built
- 1980
- Engine
- Lycoming O-235-C, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Condition · July 3, 1997
- Departed
- W12 · Mazama, WA
- Destination
- W12 · Mazama, WA
- Airport
- W12 · Lost River Resort, runway 11, 3,150 × 85 ft, gravel
- Equipment
- Unknown
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 89
- Injuries
- Minor
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Multi-engine land, Multi-engine sea, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, With waivers/limitations
- Last flight review
- February 12, 2010
- Seat
- Single
- Restraint
- 4-point
- Flight hours
- 6,000 total · 124 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 30° at 3 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 7,500 ft broken
- Temperature
- 63 °F, dew point 41 °F
- Altimeter
- 29.97 inHg
- Observed at
- KOMK, 41 nm away
Docket · 2
The files NTSB released with the investigation on December 16, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 390 KB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.