Piper PA-12 N4436M
1 August 1991 · Alton, New Hampshire, United States · No injuries
Summary
On 1 August 1991 at about 18:30 local time, a Piper PA-12 registered N4436M, operated by William Grahn, was involved in an accident near Alton, New Hampshire, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 18:30
- Classification
- Accident
- Location
- Alton, New Hampshire, United States
- Coordinates
- Not recorded
- Aircraft
- Piper PA-12
- Registration
- N4436M
- Category
- Airplane
- Engines
- 1
- Operator
- William Grahn
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Laconia → Unknown
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- NYC91LA200
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 3 | 0 | 0 | 0 | 3 |
Probable cause
THE PILOT'S IMPROPER USE OF CARBURETOR HEAT, WHICH RESULTED IN A LOSS OF ENGINE POWER.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
THE PILOT REDUCED POWER AND DESCENDED TO 2000 FEET. WHEN HE APPLIED POWER, THE ENGINE RPM BEGAN TO DROP. HE USED CARB HEAT, BUT THE RPM DROP CONTINUED. HE LANDED THE AIRPLANE IN TREES. THE PILOT SAID, 'I BELIEVE IT WAS CARB ICE. AFTER LIVING IN THE...DESERT FOR 5 YEARS, I'D FORGOTTEN HOW EASY IT WAS TO FORM BACK HERE.' THE FAA CHART, 'CONDITIONS FAVORING CARB ICE FORMATION,' SHOWS THE EXISTING TEMPERATURE/DEW POINT COULD PRODUCE 'SERIOUS ICING AT CRUISE POWER.' THE PILOT HAD A TOTAL OF 1.5 HOURS FLIGHT TIME IN THE PA-12.
Quoted verbatim from the NTSB record.
Other Piper PA-12 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 7 Oct 1991 | Piper PA-12 | Roscoe, Illinois, United States | Robert L. REX | Minor injuries | - |
| 4 May 1991 | Piper PA-12 | Stuart, Florida, United States | Red Baron Aerial ADS, Inc. | No injuries | - |
| 7 Jul 1991 | Piper PA-12 | Stockton, Iowa, United States | Blackhawk Soaring Club | No injuries | - |
| 3 Aug 1991 | Piper PA-12 | Loman, Minnesota, United States | Franklin, Barry | No injuries | - |
| 20 Mar 1991 | Piper PA-12 | Moose Creek, Alaska, United States | Joseph Cook | Fatal | 2 |
| 5 Apr 1991 | Piper PA-12 | Anchorage, Alaska, United States | David E. Williams | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 9 Jul 1991 | Cessna L-19 | Franconia, New Hampshire, United States | Stanley Parker, JR. | No injuries | - |
| 25 Aug 1991 | Grumman AA5B | Hampton, New Hampshire, United States | Richard Laflamme | No injuries | - |
| 3 Aug 1991 | Laurent A Cloutier BD-5B | Gilford, New Hampshire, United States | Laurent A. Cloutier | Minor injuries | - |
| 29 Sep 1991 | North American T-6G | Manchester, New Hampshire, United States | Albert Costa | No injuries | - |
| 6 Sep 1991 | Homebuilt AVID FLYER | Keene, New Hampshire, United States | Joseph T. Kohler | No injuries | - |
| 17 Jan 1991 | Mooney M20J | Brookline, New Hampshire, United States | Daniel Webster College | Fatal | 2 |