Cessna 177B accident near Evansville, Indiana, August 7, 2012
On August 7, 2012 at about 3:16 pm local time, a Cessna 177B, registered N34283, was substantially damaged in an accident during enroute (cruise) near Evansville, Indiana (Evansville Regional airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 2 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The pilot’s loss of control due to an inaccurate attitude reference, which was caused by an impending (“in process”) failure of the bearing in the attitude indicator.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 7, 2012 · about 3:16 pm local time
- Place
- Evansville, Indiana · Evansville Regional · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 177B · all 177Bs on the register
- Registration
- N34283 · registry record · serial 17701748
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The pilot reported a loss of attitude reference and a subsequent loss of control during cruise flight in instrument meteorological conditions. About 15 minutes into the flight, the attitude indicator displayed a 30-degree right bank and the pilot’s control inputs did not seem to correct the banked condition. The pilot subsequently noticed a 2,000 foot-per-minute descent with increasing airspeed. The attitude indicator and turn coordinator were displaying conflicting information, and the directional gyro was indicating a rapid heading change to the left. About 5,000 feet mean sea level, the airplane broke out of the clouds, and the pilot was able to regain control and landed without further incident. The pilot observed substantial damage to the wings after landing. A postaccident examination of the attitude indicator revealed significant noise during testing, consistent with an impending gyro bearing failure. In addition, after the gyro was allowed to reach operating speed, it did not fully stabilize again after it was disturbed from equilibrium. Postaccident examination of the vacuum pump and airframe vacuum system did not reveal any anomalies.
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
What happened, in order
- Flight instrument malf/fail during enroute (cruise)
- Loss of control in flight during enroute (cruise) defining event
The NTSB's findings
- cause Aircraft › Aircraft systems › Indicating/recording systems › Instrument panel › Malfunction
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: 2,295 hours in all; 7 in this make and model; 168 in the last 90 days; 71 in the last 30 days; 2,060 as pilot in command; 1,548 on instruments
- Last flight review: April 20, 2012
- Medical certificate: Class 1 (with waivers/limitations)
- Seat: rgt
- Injury: no injuries
The aircraft
- Airframe total time: 2,671 hours
- Last inspection: annual inspection, September 22, 2011; 18 hours since
- Maximum gross weight: 2,500 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-360-A1F6 (piston); 0 hours total
The flight
- Departed from: DVK Danville KY at 2:56 pm
- Destination: Evansville IN
- Flight plan: IFR
Weather at the time
- Light: daylight
- Wind: at 2 knots
- Visibility: 10 statute miles
- Sky: scat at 2,000 ft
- Temperature: 82°F (28°C), dew point 73°F (23°C)
- Altimeter: 30.02 inHg
- Observation at 2:59 pm from FTK, 17 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
3 documents, released by the NTSB on November 21, 2012. View them here, or download them; the NTSB redacts some personal details before release, and this site shows the NTSB's own titles rather than its file names.
| # | Document | What it is | |
|---|---|---|---|
| 1 | Pilot/operator Aircraft Accident Report, NTSB Form 6120.1 | PDF, 9 pages | View Download |
| 2 | radar Track Data Listing | PDF, 6 pages | View Download |
| 3 | FAA Inspector Statement | PDF, 2 pages | View Download |
The same docket at the NTSB · documents without a copy here are fetched from the NTSB when you open them.
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.