- Date
- April 16, 2006, 20:30 local (Apr 17, 2006, 01:30 UTC)
- Place
- Tecumseh, OK
- Injuries
- 4 uninjured
- Damage
- Substantial damage
- Phase of flight
- Initial climb
- Aircraft
- N945APiper PA-22
- Weather
- Visual (VMC) · Dusk
- Status
- Completed · report July 31, 2006
- Report
- Approved by Office Director
- Parties
- Federal Aviation Adminisration
- FAA report
- 20060416004769A
- Case key
- 63508
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 clearance from the trees. Contributing factors were the pilot's inadequate preflight planning/preparation and the high-density altitude.
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 238-hour private pilot and three passengers attempted to depart the 1,900-foot private grass airstrip in a vintage 125 horsepower single-engine airplane. The pilot reported that he elected to depart the airstrip in a northerly heading to take advantage of the very light headwind; however, he was aware of the tall trees at the departure end of the runway. During the takeoff roll, the pilot added that he extended the flaps to the first notch as the airplane accelerated through 60 mph. The pilot added that he was able to rotate at 60 mph, and the airplane appeared to initiate a climb. Shortly after takeoff, the airplane appeared to have encountered some "sinking air" and the airplane started to settle into the tall trees located near the departure end of the airstrip. The 1951-vintage fabric covered airplane was not equipped with a stall warning indicator. There was no post-crash fire and the pilot and passengers were able to egress the airplane unassisted. The pilot reported that there were no anomalies with the airplane's flight controls or engine. The pilot further reported that he should have "stepped off" the field length and calculated the density altitude on paper instead of figuring it in his head. The weather observation facility located about seven nautical miles southeast from the site of the accident was reporting calm winds. The field elevation at the airport was approximately 1,073 feet and the density altitude was calculated at 3,122 feet. The estimated weight of the airplane at the time of departure was near its maximum takeoff weight of 1,800 pounds.
Factual narrative
The 238-hour private pilot and three passengers attempted to depart the 1,900-foot private grass airstrip in a vintage 125 horsepower single-engine airplane. The pilot reported that he elected to depart the airstrip in a northerly heading to take advantage of the very light headwind; however, he was aware of the tall trees at the departure end of the runway. During the takeoff roll, the pilot added that he extended the flaps to the first notch as the airplane accelerated through 60 mph. The pilot added that he was able to rotate at 60 mph, and the airplane appeared to initiate a climb. Shortly after takeoff, the airplane appeared to have encountered some "sinking air" and the airplane started to settle into the tall trees located near the departure end of the airstrip. The 1951-vintage fabric covered airplane was not equipped with a stall warning indicator. There was no post-crash fire and the pilot and passengers were able to egress the airplane unassisted. The pilot reported that there were no anomalies with the airplane's flight controls or engine. The pilot further reported that he should have "stepped off" the field length and calculated the density altitude on paper instead of figuring it in his head. The weather observation facility located about seven nautical miles southeast from the site of the accident was reporting calm winds. The field elevation at the airport was approximately 1,073 feet and the density altitude was calculated at 3,122 feet. The estimated weight of the airplane at the time of departure was near its maximum takeoff weight of 1,800 pounds.
Aircraft
- Registration
- N945A
- Reported as
- Piper PA-22
- Category
- Airplane
- Serial number
- 22-254
- Airframe hours
- 2,470
- Engine
- Lycoming O-290-D, 125 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · January 1, 2006
- Departed
- SNL · Shawnee, OK
- Destination
- Tecumseh, OK
- Airport
- PVT · Private Ranch, runway 36, 1,900 × 50 ft, grass/turf
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
- 50
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 3, With waivers/limitations
- Seat
- Left
- Flight hours
- 238 total · 73 in this make and model
Weather
- Conditions
- Visual (VMC) · Dusk
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 46 °F
- Altimeter
- 29.70 inHg
- Observed at
- SNL, 7 nm away
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 N945A · 1
Matched to the same aircraft by N-number and date.