- Date
- February 8, 1989, 14:10 local (21:10 UTC)
- Place
- Boulder, CO
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Landing
- Aircraft
- N4355ZPiper PA-18-150
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 28, 1990
- Report
- Approved by Office Director
- FAA report
- 19890208002059A
- Case key
- 17671
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
Failure of the dual student to maintain directional control and the failure of the pilot in command (CFI), to provide adequate remedial action in a timely manner, to correct the swerve. A second probable cause was the cfi's failure to provide adequate supervision during the landing roll. Inadequate crew coordination is considered a factor.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The ATP rated CFI was performing a rental checkout with a private plt. The check plt told the plt to make a landing and 'if sufficient runway remained,' to make another takeoff. A landing was completed on rwy 8R, a 4,100 x 75 ft asphalt rwy. The check pilot had been following through on the controls but during the landing roll he released the controls and waited for the plt to stop. He said that as soon as he removed his hands from the controls, the stick went forward and he heard the engine speed up. The airplane swerved to the left. The check plt took the controls and attempted to correct the swerve, to no avail. The plane struck a snow drift on the left side of the rwy and nosed over.
Aircraft
- Registration
- N4355Z
- Reported as
- Piper PA-18-150
- Category
- Airplane
- Serial number
- 18-8673
- Airframe hours
- 3,545
- Engine
- Lycoming O-320-A2B, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Boulder Flying Service
- Registered owner
- Lloyd D. Carr & Donna R. Carr
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · November 11, 1988 · 74 hours before
- Departed
- 1V5
- Destination
- 1V5
- Airport
- 1V5 · Boulder Municipal
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
- 34
- Certificates
- Flight instructor, Commercial, Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Rear
- Flight hours
- 2,215 total · 165 in this make and model · 2,096 as pilot in command · 64 in the last 90 days · 46 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 50 statute miles
- Lowest ceiling
- None
- Temperature
- 18 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N4355Z · 1
Matched to the same aircraft by N-number and date.