Piper PA-23-150 accident near Radnow Township, Pennsylvania, July 16, 1990
On July 16, 1990 at about 7:06 pm local time, a Piper PA-23-150, registered N3EF, was destroyed in an accident near Radnow Township, Pennsylvania. It was a personal flight under general aviation rules (Part 91). 1 person had minor injuries; 2 others were unhurt. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
WIRE STRIKE DURING AN OFF AIRPORT FORCED LANDING IN UNSUITABLE TERRAIN. CONTRIBUTING FACTORS WERE A POWER LOSS, CAUSED BY AN ENGINE OIL LEAK.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 16, 1990 · about 7:06 pm local time
- Place
- Radnow Township, Pennsylvania · map
- Type
- Accident
- Injuries
- 1 person had minor injuries; 2 others were unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-23-150 · all PA-23-150s on the register
- Registration
- N3EF · no longer on the register · serial 23-938
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT WAS RETURNING TO HIS HOME AIRPORT FLYING VFR A 1500 FEET MSL. AFTER STARTING A SLOW CLIMB TO 3000 FEET THE PILOT NOTICED THE PROPELER RPM HAD DROPPED ON THE RIGHT ENGINE AND HIS PASSENGER TOLD HIM THAT OIL WAS LEAKING FROM THE ENGINE. THE PILOT SHUT DOWN & FEATHERED THE RIGHT ENGINE. HE COULD NOT MAINTAIN ALTITUDE OR AIRSPEED ON THE LEFT ENGINE, SO HE ELECTED TO MAKE AN OFF AIRPORT LANDING ON A CLOSED HIGHWAY. WHILE ON APPROACH, THE LEFT PROPELLER STRUCK A POWERLINE. THE PILOT COULD NOT GAIN CONTROL OF THE AIRPLANE BEFORE IT IMPACTED THE GROUND. THE ENGINE TEARDOWN SHOWED NO DISCREPANCIES. THE POST IMPACT FIRE CAUSED TOO MUCH DAMAGE TO THE OIL LINES & ENGINES EXTERIOR TO DETERMINE THE ORIGIN OF THE OIL LEAK.
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: private
- Ratings: multi-engine land; single-engine land
- Flight time: 400 hours in all; 150 in this make and model; 35 in the last 90 days; 2 in the last 30 days
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 4,400 hours
- Last inspection: annual inspection, March 16, 1990
- Maximum gross weight: 3,500 lb
- Seats: 4
- Landing gear: retractable
- Engine: Lycoming O-320 (piston); 0 hours total
- Fire on the ground
The flight
- Departed from: GED Sussex CO. DE at 6:30 pm
- Destination: 1N9 Allentown PA
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 7 statute miles
- Sky: scat at 5,000 ft
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 2 |
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.