Piper PA-23-250 accident near New Philadelphi, Ohio, December 27, 1984
On December 27, 1984 at about 1:00 am local time, a Piper PA-23-250, registered N6505Y, was substantially damaged in an accident near New Philadelphi, Ohio. It was a positioning flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- December 27, 1984 · about 1:00 am local time
- Place
- New Philadelphi, Ohio · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-23-250 · all PA-23-250s on the register
- Registration
- N6505Y · no longer on the register · serial 27-3793
- Damage
- Substantial damage
- Flight
- Positioning flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
PLT FELT VIBRATION AND REDUCED POWER ON BOTH ENGINES TO IDLE. PLT HEARD A 'THUD' AND DISCOVERED THE LEFT PROPELLER HAD SEPARATED CUTTING THROUGH THE NOSE OF THE ACFT AS IT DEPARTED. THE PROPELLER WAS NOT LOCATED. TWO OF THE SIX PROPELLER BOLTS REMAINED WITH THE ACFT. METALLURGICAL EXAM OF THE TWO BOLTS REVEALED FATIGUE PROGRESSION STEMMING FROM NUMEROUS ORIGINS.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
Pilot
- Certificate: flight instructor, commercial pilot
- Ratings: multi-engine land; single-engine land; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane
- Flight time: 19,541 hours in all; 3,026 in this make and model; 2,826 in the last 90 days; 17,577 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 9,890 hours
- Last inspection: 100-hour inspection, December 3, 1984; 353 hours since
- Maximum gross weight: 5,200 lb
- Seats: 6
- Landing gear: retractable
- Engine: Lycoming IO-540-C4B5 (piston); 0 hours total
- Operator: Appalachian Aviation
The flight
- Departed from: 22I Mcarthur OH
- Destination: ERI Erie PA
- Flight plan: IFR
- Runway 0
Weather at the time
- Light: night, dark
- Wind: from 090° at 8 knots
- Visibility: 12 statute miles
- Sky: overcast at 8,000 ft; scat at 5,000 ft
- Temperature: 27°F (-3°C), dew point 18°F (-8°C)
- Altimeter: 30.00 inHg
- Observation at 1:00 am from CAK, 28 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.