Aviation Accident Summaries

Aviation Accident Summary BFO95FA001

FANCY GAP, VA, USA

Aircraft #1

N734NB

CESSNA 172N

Analysis

THE STUDENT PILOT WAS ON A RETURN VFR FLIGHT AFTER VISITING FAMILY RELATIVES WHEN THE AIRCRAFT ENCOUNTERED INSTRUMENT METEOROLOGICAL CONDITIONS AND COLLIDED WITH TREES IN MOUNTAINOUS TERRAIN. THERE WERE NO WITNESSES WHO SAW THE CRASH; HOWEVER, SEVERAL WITNESSES IN THE AREA REPORTED SEEING AN AIRPLANE FLYING IN AND OUT OF CLOUDS, AND ALONG AN INTERSTATE HIGHWAY. THE WEATHER WAS DESCRIBED AS FOG AND RAIN. ACCORDING TO THE OWNER, THE PILOT WAS NOT AUTHORIZED TO USE THE AIRPLANE. FAA RECORDS INDICATE THE PILOT WAS LAST ISSUED A THIRD CLASS MEDICAL CERTIFICATE IN JULY 1989 AT WHICH TIME THE PILOT REPORTED 23 HOURS OF TOTAL FLIGHT TIME. THE EXAMINATION OF THE WRECKAGE DID NOT DISCLOSE EVIDENCE OF PREACCIDENT MECHANICAL MALFUNCTION.

Factual Information

On October 9, 1994, at 1010 eastern daylight time, N734NB, a Cessna 172N, owned and operated by William E. Garris of Winston Salem, North Carolina, crashed while enroute to Winston Salem, North Carolina. Instrument meteorological conditions prevailed at the accident site and a flight plan was not filed. The aircraft was destroyed. The flight was operated under 14 CFR 91 and originated in Bluefield, West Virginia. The flight was destined for Winston Salem, North Carolina. According to an FAA Aviation Safety Inspector, the pilot departed North Carolina the day before to Bluefield to visit his grandparents. The FAA Aviation Safety Inspector stated that the pilot received a weather briefing the morning of the accident at 0742 local time from the Elkins Flight Service Station in West Virginia. The flight departed Bluefield at 0912 local time enroute to its destination. The airplane impacted trees in mountainous terrain during cruise flight about a quarter mile northeast of interstate 77 near Fancy Gap, Virginia. There were no witnesses to the crash; however, a witness who was travelling north on interstate 77 reported that she saw an airplane with the same description as the accident airplane flying low. The witness stated, "It looked like he was following the highway. He had his lights on and was flying really slow. It was real foggy and rainy. We had our headlights on." A hunter who was in the woods near the accident site stated that he heard an airplane flying low earlier that day. He stated that as he was walking in the woods, "...he smelled something burning...." The hunter stated that he followed the smell and came upon the wreckage of N734NB. The accident occurred during the hours of daylight, at 36 degrees 40 minutes North and 80 degrees 40 minutes West. PERSONNEL INFORMATION The pilot held a student pilot certificate. His log books were not located and his last record of flight time was on his application for a Class III medical certificate dated July 25, 1989. At that time he had logged 23 hours of total flight time. AIRCRAFT INFORMATION The 1977 year model Cessna 172 airplane, serial no. 17268974 was equipped with a Lycoming O-320-H2AD engine, serial no. RL-8326- 76T. The log books of the airplane were destroyed by fire. According to the owner of the airplane, the aircraft had accumulated over 4202 hours of total flight time. The last annual inspection was completed on August 26, 1994, and the airplane had accumulated over 15 hours since the annual inspection. METEOROLOGICAL INFORMATION The 0855 hours surface weather observation for Mercer County Airport, Bluefield, West Virginia, about 45 miles north of the accident site was as follows: Sky condition, 10,000 feet scattered; visibility, 10 miles; temperature, 64 degrees (F); dew point, 55 degrees (F); wind condition, 180 degrees magnetic at 8 knots; and altimeter, 30.09 inches of Hg. WRECKAGE AND IMPACT INFORMATION The examination of the wreckage revealed no evidence of mechanical malfunction. Examination of the accident site revealed the airplane impacted trees at an altitude of 2640 feet MSL. The wreckage was strewn a distance of 170 feet oriented on a magnetic heading of 320 degrees. The airplane struck trees initially, and at the initial impact point (IIP), the right wing tip was located. The nosewheel, and right aileron also separated during the impact sequence. The airplane came to rest inverted, and the forward section of the airplane including the engine was destroyed by fire. The cable continuity of the ailerons, rudder and elevator was confirmed. The jackscrew for the flaps was retracted, and the jackscrew for the elevator trim was extended 1.5 inches. According to Cessna these positions correspond to flaps up and elevator trim 10 degrees tab up. The engine was inverted and severely damaged by impact and fire. All the cylinders were attached and secured to the crankcase. One of the two bladed propeller blades was melted 17 inches outward from the spinner. The other blade was bent forward midspan and exhibited chordwise scratching. The engine was examined at the accident site. The examination revealed that the firewall was still attached and sections of the airframe was resting against the engine. The number one and three cylinder heads were melted. Both number one and three piston tops were visible and had sustained fire damage. The top of the crankcase was melted exposing the cam and crankshaft. The carburetor heat control valve was found in the on position. The carburetor and oil sump sustained fire damage. The number 2 top and bottom spark plugs, and the number 4 bottom spark plug were removed from the cylinders and their electrodes were grayish in color. The carburetor was removed. The throttle plate was found 1/4 open and the mixture control arm was approximately 1/4 from idle cut-off. The carburetor was disassembled. The floats sustained fire damage. MEDICAL AND PATHOLOGICAL INFORMATION A Medical Examination was done by Dr. J. H. Early Jr. the State Medical Examiner on October 10, 1994. Toxicological tests did not detect alcohol, drugs, or carbon monoxide. ADDITIONAL INFORMATION The wreckage was released to James T Brewer, Director of THG- Inflite Aviation Adjustment Group, representing the owner on October 11, 1994.

Probable Cause and Findings

The pilot's inadequate inflight planning and his failure to maintain adequate terrain clearance. Other related factors are: fog, rain, VFR flight into IMC, inexperience and mountainous terrain.

 

Source: NTSB Aviation Accident Database

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