ERA13FA336

The pilot's decision to continue VFR flight into night instrument meteorological conditions, which resulted in spatial disorientation and a loss of control.

The flight departed under visual flight rules (VFR) and then obtained VFR flight following before proceeding in a southeasterly direction. About 28 minutes after takeoff, while flying about 3,000 feet mean sea level over a sparsely populated and heavily wooded area with few ground reference lights, the flight likely encountered light rain. The pilot flew south of a wind turbine, initiated an approximate 180-degree left turn with 300 feet altitude loss, then began following a dirt road associated with the wind turbines. After completion of the turn he advised the controller, "...we're inadvertent IMC [instrument meteorological conditions], reversing..." and asked for a heading to the nearest airport. The controller asked the pilot if he wanted a vector to the nearest airport and also if the flight was in IMC, but there was no reply. The controller provided a heading for a vector to a nearby airport but the pilot did not respond. The flight continued in the same orientation following the course reversal, flying past another wind turbine before turning right; the controller again advised the pilot of the direction to the nearest airport. The pilot immediately responded that he was, "...having trouble maintaining control here." The controller informed the pilot that the nearest airport was heading 068 degrees and 8 miles away, and the recorded radar data indicates the pilot flew a north-northeasterly heading with changes in altitude noted. The comments from the pilot followed by the maneuvering (changes in altitude and heading) were consistent with the known effects of spatial disorientation. Radio and radar contact were lost; the helicopter descended on an east-northeasterly heading into trees and terrain in a heavily wooded area away from any nearby wind turbines. Postaccident examination of the helicopter revealed extensive impact damage, although there was no evidence of a preimpact failure with the flight controls, drive line, or structure. The engine was found to operate normally and data downloaded from the engine monitoring unit indicates no evidence of preimpact failure or malfunction. While there was no record of an official preflight weather briefing before departure, a text message from the non-instrument rated pilot to his brother approximately 1 hour before departure stating, "...Waiting out weather to fly back to [Ocean City, MD] tonight" indicates that to some extent he was aware of the weather. Had the pilot obtained an official preflight weather briefing for the intended VFR flight, the briefing specialist likely would have advised him against VFR flight due to IMC (ceiling less than 1,000 feet and visibility less than 3 miles) and mountain obscuration that were forecast to exist in the accident area. Although the left seat occupant was a student pilot, it is unlikely the pilot-in-command was giving him instruction during the accident flight. While operation of a helicopter with decreased ceiling and visibility can be safely performed, the environmental conditions in the accident site area consisting of a sparsely populated heavily wooded area with few ground reference lights and no illumination from the moon were indicators that VFR flight should not have continued.

HISTORY OF FLIGHT On July 27, 2013, about 2220 eastern daylight time, a Robinson Helicopter Company R66 helicopter N646AG, operated by a private individual, collided with trees and terrain near Noxen, Pennsylvania. Instrument meteorological conditions prevailed in the area at the time and no flight plan was filed for the 14 Code of Federal Regulations (CFR) Part 91 personal flight from Tri-Cities Airport (CZG), Endicott, New York, to Jake Arner Memorial Airport (22N), Lehighton, Pennsylvania. The helicopter was destroyed and the commercial-rated pilot and 4 passengers were fatally injured. The flight originated from CZG about 2151. The flight departed VFR, and at 2153, the non-instrument rated pilot contacted Binghamton Approach Control and advised the controller that the flight had just departed CZG, and was requesting visual flight rules (VFR) flight following. The controller provided the altimeter setting (30.00 inches of Mercury) and asked the pilot the destination and requested altitude, to which he replied 22N, and 3,000 feet msl. A discrete transponder code was assigned (4606), and the flight was radar identified 3 miles southwest of CZG. The flight proceeded in a southwesterly direction flying about 3,000 feet until about 2157, then turned to a south-southeasterly heading while flying between 2,600 and 3,000 feet msl. At 2204, air traffic control communications were transferred to Wilkes-Barre Approach Control; the pilot established contact with that facility advising the controller that the flight was level at 3,000 feet msl. The Wilkes-Barre Approach controller acknowledged the transmission, and issued an altimeter setting of 30.00 inches of Mercury. While in contact with that facility the flight proceeded in a southeasterly direction with altitude and slight heading changes until about 2219, at which time recorded radar reflects a left turn to a northwesterly direction. Correlation of the radar targets from recordings of the Wilkes-Barre airport surveillance radar with locations of wind turbines in the area revealed that between 2218:55, and 2219:00, the helicopter flew west of the B-26 wind turbine, and continued in a southeasterly direction, then when turning to a northwesterly direction about 2219:19, the pilot flew just south of the B-21 wind turbine. The radar targets depict the flight path above and adjacent to a road associated with the wind turbines while turning to a northwesterly direction; no determination could be made whether the pilot had visual contact with the road. At 2219:40, while just east of the B-16 wind turbine, the pilot advised the controller, "we're inadvertent IMC, reversing ah, can you give us a heading to the nearest airport, please." The controller asked the pilot if he wanted a heading to the nearest airport and if the flight was in IFR conditions but the pilot did not respond to that transmission. The radar data reflects that the helicopter continued in a northwesterly direction until 2219:53. About 6 seconds later, the controller instructed the pilot to fly heading 068 degrees for vectors to an airport, to which he replied 5 seconds later "6 alpha golf having trouble maintaining control here." The helicopter at that time was located about 1,105 feet east-southeast of the previous radar target 10 seconds earlier, and had descended from 2,800 to 2,600 feet msl. The radar data from Wilkes-Barre Approach reflects that between 2220:03 and 2220:17, the flight proceeded in a northeasterly heading with some altitude deviation noted. The controller then asked the pilot, "helicopter 6AG ah you having trouble maintaining altitude sir", to which the pilot immediately replied, "Affirmative 6AG." The radar data reflected that between 2220:17, and 2220:27, the helicopter descended from 2,600 to 2,300 feet, though the coordinates remained unchanged. Radio and radar contact were lost. The pilot of a nearby airline flight attempted to communicate with the pilot at 2221, but there was no reply. The helicopter crashed on privately owned wooded land leased to an energy company; there were no known witnesses to the accident that occurred during a dark night. A 406 MHz emergency locator transmitter (ELT) signal was received at the Air Force Rescue Coordination Center (AFRCC) at 2224, and the Pennsylvania State Police and State Emergency Operations Center were notified. A search was initiated, but adverse weather (heavy fog) caused the search to be called off in the early morning hours. The search resumed several hours later when the weather conditions improved; the wreckage was located on July 28, 2013, about 1350. PERSONNEL INFORMATION The pilot seated in the right seat, age 30, held a commercial pilot certificate with rotorcraft helicopter rating issued January 19, 2012. He also held a certified flight instructor certificate with rotorcraft helicopter rating issued February 25, 2012. He was issued a first class medical certificate with no limitations on April 30, 2012. On the application for his last medical certificate he listed a total time of 350 hours. His 2nd pilot logbook contained entries from the first dated February 12, 2013, to the last dated July 21, 2013. He carried forward a total flight time of 952 hours, 14.5 hours simulated instrument time, and 6.0 hours turbine powered rotorcraft helicopter, though the make and model helicopter was not specified. Including his carry forward time he logged a total time of approximately 1,328 hours, of which 1,274 hours were as pilot-in-command. He did not log any simulated or actual instrument flight time in the 2nd pilot logbook. Excluding the unlogged flights after July 21, 2013, he logged a total of approximately 92 hours night flight time, of which approximately 5 hours were in the previous 90 days, and 0.3 hour, or 18 minutes was logged in the previous 30 days. The last logged night flight occurred on July 16, 2013, and was flown in a Robinson R22. Further review of his 2nd logbook revealed an entry dated July 19, 2013 indicating his attendance of a R66 helicopter pilot safety course at the manufacturer's facility. A total of approximately 1 hour was logged in the R66 helicopter. Documents provided by Robinson Helicopter Company associated with the pilot/flight instructor safety course revealed that on the application dated June 28, 2013, he listed in part having accrued 1,306 hours total helicopter hours, and 6 hours in R66 helicopters. Ground training was conducted July 15 through July 18, 2013, and on July 19, 2013, an approximately 1.0 hour flight was conducted in an R66 helicopter. On the "Instructor/Pilot Evaluation" form for training conducted in the R66, the instructor indicated his proficiency was above average in "Knowledge" with a comment indicating, "Well studied on systems." He was marked average for the remainder of the maneuvers, and a comment in the General Comments section indicated, "Flew well – no problems noted. Taking delivery of R-66 today." In addition, he was approved to transition other pilot's in Robinson R66 helicopters. Following completion of the pilot/flight instructor safety course at the manufacturer's facility, he and another pilot flew the helicopter during the course of several flights over a 3 day period from California to Hampton Roads Executive Airport (PVG), Norfolk, Virginia. While the pilot logged the time (approximately 19.6 hours) as dual received and pilot-in-command, the other individual who flew with him and who is a certified flight instructor reported flying the helicopter 7.4 hours. He also indicated he did not give the accident pilot any flight instruction during any of the flights, and further, he did not sign his pilot logbook indicating he had given him flight instruction. The individual who flew with the accident pilot reported there were no discrepancies with the helicopter, and all systems worked OK with no squawks noted. After an uneventful arrival in