N7304S

HISTORY OF FLIGHT

On July 24, 2011, about 0645 Alaska daylight time, a Cessna 182P airplane, N7304S, impacted mountainous terrain about 6 miles southeast of the Juneau International Airport, Juneau, Alaska. The commercial pilot and the sole passenger were fatally injured, and the airplane sustained substantial damage. The airplane was being operated as a 14 CFR Part 91 visual flight rules (VFR) cross-country personal flight when the accident occurred. Visual meteorological conditions prevailed at the airplane's point of departure. The flight originated at the Hoonah Airport, Hoonah, Alaska, about 0629, and was en route to the Juneau International Airport. At the time of the accident, marginal visual meteorological conditions were reported at the Juneau Airport. The weather conditions at the accident site are not known. However, witnesses in Juneau reported that weather conditions to the southeast, and specifically in the direction of the accident site, were much worse than that being reported at the airport. No flight plan was filed, and there is no record that a weather briefing was obtained.

The area between Hoonah and Juneau consists of remote inland fjords, coastal waterways, and steep mountainous terrain.

According to a Juneau air traffic control tower (ATCT) specialist on duty at the time of the accident, the pilot contacted the ATCT about 0643, reporting that he was about 10 miles southwest of the airport for landing. The ATCT specialist instructed the pilot to report 4 miles southwest of the airport. Moments later, a faint emergency locator transmitter (ELT) was heard on 121.5 MHz by the Juneau ATCT specialist, as well as personnel at the Juneau Flight Service Station. No further radio contact from the accident airplane was received.

The Federal Aviation Administration (FAA) issued an alert notice (ALNOT) at 0757 Alaska daylight time.

Continuous poor weather conditions prevented search crews from locating the airplane until the next day. The fragmented airplane wreckage was in an area of steep mountainous terrain.

PERSONNEL INFORMATION

The pilot, age 77, held a commercial pilot certificate with airplane single engine land and instrument airplane ratings. His most recent third-class medical certificate was issued February 5, 2010, and contained the limitation that he must wear corrective lenses.

No personal flight records were located for the pilot, and the aeronautical experience listed on page 3 of this report was obtained from a review of the FAA’s airmen records on file in the Airman and Medical Records Center in Oklahoma City. On the pilot's application for medical certificate, dated February 5, 2010, he indicated that his total aeronautical experience consisted of 8,300 flight hours, of which 40 were logged during the previous 6 months.

AIRCRAFT INFORMATION

At the time of the accident the airplane had a total time in service of 6,448.7 flight hours. A review of the maintenance records revealed that the most recent annual inspection of the airframe and engine was on May 26, 2011, about 7.9 flight hours before the accident.

The airplane was equipped with a Teledyne Continental Motors O-470-S engine, rated at 230 horsepower. The engine was overhauled about 332.0 hours before the accident.

METEOROLOGICAL INFORMATION

The closest weather reporting facility was the Juneau International Airport, 5 miles north-northwest of the accident site. About 10 minutes before the accident, at 0635, a weather observation from the Juneau Airport was reporting, in part: Wind, 090 degrees (true) at 8 knots; visibility, 5 statute miles with light rain and mist; clouds and sky condition, 2,800 feet broken, 3,600 feet overcast; temperature, 55 degrees F; dew point, 55 degrees F; altimeter, 29.89 inches Hg.

The next closest official weather observation station was Hoonah, the accident airplane's departure airport, about 31 miles south-southwest of the accident site. About 24 minutes before the airplane departed, an Aviation Routine Weather Report (METAR) was reporting, in part: Wind, calm; visibility, 10 statute miles; clouds and sky condition, 3,500 feet overcast, temperature, 57 degrees F; dew point, 55 degrees F; altimeter, 29.89 inHg.

WRECKAGE AND IMPACT INFORMATION

On July 25, two NTSB investigators, along with two FAA aviation safety inspectors from the Juneau Flight Standards District Office (FSDO), examined the wreckage at the accident site, but high winds, rain, and low ceilings limited the available time at the scene.

All of the airplane's major components were found at the main wreckage site. The accident site was in an area of steep, mountainous, tundra and rock-covered terrain, with sparsely populated areas of low trees/scrubs, at an elevation of about 3,100 feet msl.

The main debris path was on a 035 degree heading, and downhill (All headings/bearings noted in this report are magnetic).

An area believed to be the initial impact point, about 130 feet above the main wreckage site, was marked by broken shrubs and disrupted tundra atop a rock knoll. The airplane's left aileron and the left wingtip fairing were found next to the initial impact point.

After initial impact, the fragmented wreckage continued down the backside of the rock knoll, coming to rest on a narrow mountainous outcropping, surrounded by vertical rock cliffs on three sides. The engine, propeller, and nose landing gear were torn from the airplane's firewall, and continued off the ledge, falling about 800 to 1,000 feet and into the valley floor below.

Scattered downslope, in a line between the initial impact point, and the final resting point of the main wreckage, were small portions of wreckage debris, paint chips, broken Plexiglas, and personal effects.

The airplane's severed left wing was atop the main wreckage, and it had extensive spanwise leading edge aft crushing and bending. The wing's flap remained connected to its attaching points.

The airplane's right wing remained attached to the fuselage attaching points, but the entire wing had extensive spanwise leading edge aft crushing. The wing's flight control surfaces remained connected to their respective attach points, except for the right ailerons inboard hinge which was torn free.

The airplane's empennage was severed just behind the aft passenger seats, but all of the flight control surfaces remained connected to their respective attach points.

Due to extensive impact damage, continuity of the flight control cables could not be established.

There were no preaccident mechanical problems discovered during the NTSB IIC's on-scene wreckage examination.

Continuous poor weather conditions prevented recovery crews from reaching the accident site until July 30, 2011. After recovery, the airplane wreckage was taken to the Juneau airport.

On August 11, 2011, an FAA airworthiness inspector from the Juneau FSDO examined the accident airplane's engine, propeller and nose landing gear assembly. The FAA inspector reported that the propeller bolts attaching the propeller to the engine crankshaft remained attached to the crankshaft flange, but the crankshaft was fractured just aft of the flange. Both propeller blades were loose in the propeller hub, but remained attached to the hub assembly. The inspector noted that both propeller blades had extensive leading edge gouges, substantial torsional "S" twisting, and chordwise scratching.

The FAA inspector also reported that the engine sustained significant impact damage, but no preaccident engine anomalies were found during his examination.

MEDICAL AND PATHOLOGICAL INFORMATION

A postmortem examination was conducted under the authority of the Alaska State Medical Examiner, Anchorage, Alaska, on August 1, 2011. The cause of death for the pilot was attributed to blunt force, traumatic injuries.

The FAA's Civil Aeromedical Institute performed toxicological examinations for the pilot on November 21, 2011, which was negative for alcohol. The toxicological examination revealed unspecified levels of Tamsulosin in the pilot's blood, and unspecified levels of the same substances in his urine.

Tamsulosin (trade name Flomax) is a prescription medication commonly used to treat an enlarged prostate.

SEARCH AND RESCUE

After being notified of an overdue airplane, and after learning about reports of an emergency locator transmitter (ELT) signal along the accident pilot's anticipated flight route, search and rescue personnel from Juneau Mountain Rescue, U.S. Coast Guard, and the Alaska State Troopers, began an extensive ground and airborne search. Rescue personnel tracked an ELT signal to an area of mountainous terrain, but poor weather conditions prohibited a U.S. Coast Guard HH-60 helicopter from searching the upper levels of the search area.

About 1700, ground search personnel from the Juneau Mountain Rescue tracked the ELT signal, and discovered the airplane's engine, propeller, and various fragmented portions of wreckage at the base of a 900 foot high rock wall, but were unable to locate the fuselage or the airplane's occupants.

On July 25, about 1200, members of the Juneau Mountain Rescue, along with two investigators from the NTSB's Alaska Regional office, three safety inspectors from the Juneau FSDO, and an Alaska State Trooper, found the main wreckage site at the 3,100 feet level of north Douglas Island, and confirmed that the airplane's occupants had sustained fatal injuries.

TESTS AND RESEARCH

At the time of the accident, the pilot was using two personal Garmin GPS receivers, a Garmin GPSMAP 195 and a Garmin GPSMAP 495. Both units were recovered at the accident site by the NTSB IIC, and both were sent to the NTSB's Vehicle Recorder Division for examination.

Several minutes of stored GPS position data was retrieved from each of the GPS track logs, and a Senior NTSB Electronic Engineer was able to reconstruct the entire route of flight for the accident airplane.

The combined GPS data logs f...