- Date
- August 10, 1988, 10:12 local (15:12 UTC)
- Place
- Oklahoma City, OK
- Injuries
- 3 uninjured
- Damage
- Minor damage
- Phase of flight
- Initial climb
- Aircraft
- N3589BPiper PA-31-350
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 11, 1990
- Report
- Approved by Office Director
- Case key
- 22578
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
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 flight was an instructional flight with three pilots onboard. The airplane departed on runway 17R and was 300 to 400 feet AGL when one blade of the right propeller separated from the hub, followed by the remainder of the propeller. The PIC made an immediate right turn and entered downwind for runway 12, and then landed on that runway. Examination revealed fracture resulted from fatigue cracks that initiated at the grease holes in the forward half of the propeller hub.
Aircraft
- Registration
- N3589B
- Reported as
- Piper PA-31-350
- Category
- Airplane
- Serial number
- 31-8052134
- Airframe hours
- 2,907
- Engine
- Lycoming TI0-540-J2BD, 350 horsepower, reciprocating
- Damage
- Minor damage
- Flight
- Instructional · Part 91
- Operator
- FAA
- Registered owner
- Michael Zicka Leasing Co.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · June 15, 1988 · 48 hours before
- Departed
- OKC · Oklahoma City, OK
- Flight plan
- Company VFR
- Airport
- OKC · Will Rogers World, runway 17R, 7,800 × 150 ft, concrete
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
- 52
- Certificates
- Flight instructor, Airline transport
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Left
- Flight hours
- 2,962 total · 441 in this make and model · 2,912 as pilot in command · 50 in the last 90 days · 47 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 170° at 13 knots
- Visibility
- 15 statute miles
- Lowest ceiling
- None
- Temperature
- 82 °F, dew point 70 °F
- Altimeter
- 30.00 inHg