BFO96FA032

NTSB accident investigation · Cessna 310R · Bellville, OH · December 21, 1995

Accident · FatalField investigationFinal report
Date
December 20, 1995, 20:50 local (Dec 21, 1995, 01:50 UTC)
Place
Bellville, OH
Injuries
3 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N1269GCessna 310R
Weather
Instrument (IMC) · Night/dark
Status
Completed · report October 4, 1996
Report
Approved by Office Director
FAA report
19951220041549A
Case key
9094

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The NTSB’s determination of the probable cause, and any contributing factors.

the pilot's in-flight loss of aircraft control for undetermined reason(s), which resulted in the airplane exceeding its design stress limitations and an in-flight breakup.

Analysis

The airplane was cruising at 8,000 feet in night, IMC conditions, when the pilot requested and received clearance to climb to 10,000 feet. Radar data showed the airplane leveled off at 10,000 feet. Shortly thereafter, it made an abrupt right turn and descended through 8,300 feet, then radar contact was lost. Witnesses near the accident site heard and/or saw the airplane before it crashed. According to them, the engines revved as if the airplane went into a dive or the pilot 'throttled up.' Also, the airplane was reported to be maneuvering before it crashed. Wreckage was located in an open field, scattered over a distance of 550 feet. The horizontal stabilizers and elevators were found near the western end of the wreckage path, 184 feet west of the main impact crater. The left and right wing were found 60 and 101 feet east of the main crater, respectively. Also, the engines had separated from the main wreckage and were found in two craters about 50 feet apart. Examination revealed the horizontal stabilizers had failed down and aft, and the wings had failed downward. The airspeed indicator was found with a reading of over 260 knots. The airplane's never exceed speed was 227 KCAS. About 12 miles north of the accident site, the weather was in part: 2400 feet overcast with 7 miles visibility; witnesses reported that snow was falling. The pilot of another aircraft reported light icing conditions between 4,000 and 11,500 feet.

Factual narrative

The factual narrative1,275 words

History of flight

On December 20, 1995, at 2050 eastern standard time (EST), a Cessna 310R, N1269G, collided with terrain near Bellville, Ohio. The certificated flight instructor (CFI), the dual student, and the pilot rated passenger were fatally injured. The airplane was destroyed. Visual meteorological conditions prevailed, and an instrument flight rules (IFR) flight plan was filed. The dual instructional flight was conducted under 14 CFR Part 91, and originated in Philadelphia, Pennsylvania, at 1815 EST. The intended destination was Fort Wayne, Indiana.

The pilot departed Omaha, Nebraska, on the morning of December 20, on a dual cross country with his student and a pilot rated passenger. The intended destination was Philadelphia, Pennsylvania, with a planned stop for fuel in Ft. Wayne, Indiana. When the aircraft arrived in Philadelphia, the pilot rated passenger called his ex-roommate and reported that the aircraft, "...was leaking a fluid." One of the mechanics at Atlantic Aviation at the airport in Philadelphia, stated that the pilot, "...informed me that he had a red dye leak in the right prop hub area...I informed him that the nearest place for propeller tech work is Sensenich Prop Co...I gave him the phone number and told him they could better assist him."

The mechanic at Atlantic Aviation stated that, "...the pilot told me he had spoken to his Director of Maintenance...and they wanted me to remove the spinner and tell them what I saw...I removed the spinner and found a concentration of red dye at the base of one of the props, but I could not determine the exact point of origin...the pilot informed me that he noticed the red dye when he landed at Fort Wayne, Indiana...I questioned him as to what was done at Fort Wayne, and was told the dye was wiped down." The pilot told the mechanic to put the spinner back on the propeller. The mechanic reinstalled the propeller spinner before the aircraft departed Philadelphia.

According to telephone credit card calling records, the pilot placed a telephone call from Philadelphia to the telephone number he received from the Atlantic Aviation mechanic, to contact Sensenich Propeller Company. During a postaccident interview with Sensenich Propeller Company personnel, they indicated that there was no record of a conversation with the pilot, nor did any Sensenich employees recall speaking to the pilot of the accident airplane.

According to the Federal Aviation Administration (FAA) Inspector, the flight was returning to it's home base in Omaha, Nebraska, with a refueling stop in Indiana, reversing the route that was flown to Philadelphia earlier that day. According to Air Traffic Control (ATC) records, at 0012:28 EST the aircraft was in cruise flight at 8,000 feet Mean Sea Level (MSL). At 0140 EST, the pilot reported that he was in instrument meteorological conditions (IMC). According to the Cleveland Air Route Traffic Control Center (ARTCC) records, the pilot requested permission to climb to 10,000 feet MSL at 0142 EST. At 0143:24 EST, ATC approved the pilot's request to climb to 10,000 feet.

According to the ARTCC controller, the flight climbed to 10,000 feet, and leveled off approximately 20 miles southeast of Mansfield. The controller then noted that the airplane's altitude changed to 9400 feet, then 8300 feet. At 0149:48 EST the ARTCC controller advised the pilot that the airplane's transponder signal was lost. No further reports or requests were made by the pilot. Four airplanes in the area tried to establish radio contact with the accident airplane, but there was no response. At 0200 EST, an airplane operating in the vicinity of the accident airplane, reported light icing between 4,000 feet and 11,500.

A witness who was working at the gas station near the crash site, stated, "I [saw] a bright light pass over the gas station, I heard the motor of the airplane it was making a loud whining noise. I seen the plane then go over the hill and then I heard a loud crash. The weather was cloudy and it was snowing at the time of the accident...and it was dark."

According to the National Transportation Safety Board's radar study specialist, examination of the National Tracking Analysis Program (NTAP) primary and secondary radar data from Cleveland ARTCC revealed that the airplane was tracking on a west-northwest heading at an altitude of approximately 8,000 feet MSL with ground speeds fluctuating, around 150 knots. The aircraft continued west-northwest for 22 seconds and the ground speed decreased to approximately 130 knots. Between 0144:22 EST and 0145:43 EST, the aircraft turned to a west-southwest heading, climbed from 8,100 to 9,300 feet MSL, and the ground speed increased to approximately 140 knots.

Radar data indicated that between 0145:43 EST and 0146:03 EST, the aircraft was on a south-southwest heading and it's altitude increased to 9,400 feet MSL while ground speeds remained at approximately 140 knots. Then the aircraft held a northwesterly heading for 51 seconds, increased its altitude to 9,900 feet MSL, and the ground speed decreased to approximately 120 knots. Radar data revealed that, between 0146:54 EST and 0147:24 EST, the aircraft was on a 270 degree heading, the altitude increased to 10,000 feet MSL, and ground speeds increased to approximately 140 knots.

According to the radar data study, for 41 seconds (between 0147:24 EST and 0148:05 EST), the aircraft was on a west south-westerly heading at an altitude of 10,000 feet MSL, with ground speed increasing to 150 knots. The radar data indicated that, between 0148:05 EST and 0149:06 EST, the aircraft made a sharp right turn, and descended through 8,300 feet MSL.

The aircraft impacted terrain during the hours of darkness at 40 degrees, 38 minutes, and 83 seconds north latitude and 82 degrees, 32 minutes, and 10 seconds west longitude. Witness statements, the radar data study, and excerpts from the FAA's ATC package are appended.

Personnel information

The CFI held a commercial pilot certificate with single engine and multi-engine land ratings. He also held certificated flight instructor and instrument airplane ratings. According to the CFI's log book, he had accumulated over 750 hours of total flight time, including 100 hours in the accident make and model airplane. The CFI had logged more than 33 hours of actual instrument time and 45 hours of night flight time. The last recorded actual instrument time and night time in the CFI's log book was October 4, 1995. The CFI held a valid FAA medical certificate, with no waivers/limitations, which was issued March 22, 1995.

The dual student held a private pilot certificate with a single engine land and instrument rating. According to his application for his third class medical certificate dated September 1, 1994, he had reported 250 hours of flight time. (See Supplement E, attached.)

The pilot rated passenger held a private pilot certificate with a single engine land rating. According to his application for his second class medical certificate dated May 18, 1995, he reported 5 hours of flight time. (See Supplement E, attached.)

Aircraft information

At the time of the accident, according to the airplane's maintenance log books, the aircraft had accumulated over 3,248 hours of flight time. It received a 100 hour inspection on August 4, 1995. The airplane accumulated over 50 hours of flight time since the most recent inspection.

Meteorological information

At 2045 eastern standard time, Mansfield Airport, Mansfield, located about 12 miles north of the accident site issued the following observation:

Sky condition, ceiling 2400 feet overcast; visibility, 7 miles in light snow; temperature, 17 degrees Fahrenheit (F); dew point, 14 degrees Fahrenheit (F); winds out of 240 degrees at 10 knots; and altimeter 29.91 inches Hg.

Witnesses reported that it was snowing on the ground at the time of the accident. A

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.

Loss of control - in flightCruise
Light condition - dark night
Weather condition - clouds
Weather condition - snow
Weather condition - icing conditions
Aircraft control - not maintainedPilot in commandCause
Airframe/component/system failure/malfunctionDescent - uncontrolled
Design stress limits of aircraft - exceededPilot in commandCause
Horizontal stabilizer - overload
Horizontal stabilizer - separation
Wing - overload
Wing - separation
In flight collision with terrain/waterDescent - uncontrolled

Aircraft

Registration
N1269G
Reported as
Cessna 310R
Category
Airplane
Serial number
310R0689
Airframe hours
3,248
Engine
Continental IO-520-M, 285 horsepower, reciprocating
Damage
Destroyed
Flight
Instructional · Part 91
Registered owner
Sky Harbor Air Service
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · August 4, 1995 · 50 hours before
Departed
PHL · Philadelphia, PA
Destination
FTW · Fort Wayne, IN
Flight plan
IFR

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
22
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Toxicology
Performed
Flight hours
750 total · 100 in this make and model · 600 as pilot in command · 90 in the last 90 days · 30 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
240° at 10 knots
Visibility
7 statute miles
Lowest ceiling
2,400 ft overcast
Temperature
18 °F, dew point 14 °F
Altimeter
29.00 inHg
Observed at
MFD, 12 nm away

Docket · 34

The files NTSB released with the investigation on September 3, 1996, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.4 MB in all.

Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1Item 1 · .PDF · 600 KBSupplement AItem 2 · .PDF · 199 KBSupplement BItem 3 · .PDF · 308 KBSupplement EItem 4 · .PDF · 195 KBSupplement KItem 5 · .PDF · 1.1 MBRecorded Radar StudyItem 6 · .PDF · 1.1 MBState Highway Patrol ReportItem 7 · .PDF · 615 KBMaps or Charts of Accident Area, Wreckage DiagramsItem 8 · .PDF · 297 KBMaps or Charts of Accident Area, Wreckage DiagramsItem 9 · .PDF · 566 KBReport from Propeller ExamItem 10 · .PDF · 101 KBRichland County Sheriff's OfficeItem 11 · .PDF · 125 KBWeather information located in wreckageItem 12 · .PDF · 125 KBExcerpts from ATC PackageItem 13 · .PDF · 914 KBStatement of Party Representatives to NTSB InvestigationItem 14 · .PDF · 300 KBRelease of Aircraft Wreckage, NTSB Form 6120.15Item 15 · .PDF · 57 KBToxicological ReportsItem 16 · .PDF · 144 KBPhoto 1. Damage to trees near accident siteItem 17 · .PDF · 76 KBPhoto 2. Wreckage disbributionItem 18 · .PDF · 45 KBPhoto 3. Right wing (Photo by Continental-- Negative not available)Item 19 · .PDF · 41 KBPhoto 4. Left wing (Photo by Continental - Negative not available)Item 20 · .PDF · 40 KBPhoto 5. Right horizontal stabilizer (Photo by cessna Negative not available)Item 21 · .PDF · 28 KBPhoto 6. Horizontal stabilizer (Photo by Cessna Negative not available)Item 22 · .PDF · 32 KBPhoto 7. Left elevatorItem 23 · .PDF · 37 KBPhoto 8. Right elevator (Photo by Cessna - Negative not available)Item 24 · .PDF · 33 KBPhoto 9. Dorsal fin (Photo by Cessna - Negative not available)Item 25 · .PDF · 43 KBPhoto 10. Vertical stabilizer (Photo by Cessna - Negative not available)Item 26 · .PDF · 40 KBPhoto 11. Section of rudder (Photo by Cessna - Negative not available)Item 27 · .PDF · 31 KBPhoto 12. Lower section of rudder (Photo by Cessna - Negative not available)Item 28 · .PDF · 33 KBPhoto 13. Left main spar, lower spar cap (Photo by cessna - Negative not available)Item 29 · .PDF · 33 KBPhoto 14. Right main sparItem 30 · .PDF · 47 KBPhoto 15. Right hand propeller (Photo by Continental - Negative not available)Item 31 · .PDF · 34 KBPhoto 16. Left hand Propeller (Photo by Cessna - Negative not available)Item 32 · .PDF · 33 KBPhoto 17. Airspeed indicator (Negative not available)Item 33 · .PDF · 27 KBPhoto 18. Vertical speed indicator (Negative not available)Item 34 · .PDF · 47 KB

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N1269G · 1

Matched to the same aircraft by N-number and date.