# NTSB NYC01LA043: Robinson R-22, N8117Y, Londonderry, NH, November 21, 2000 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: November 21, 2000, 09:00 local (14:00 UTC) - Place: Londonderry, NH - Location: 42.8534° N, 71.3624° W: Placed by OpenAirDocs: center of Londonderry, NH, within about 6 miles (OpenAirDocs) - Nearby events: https://openairdocs.org/map.md?lat=42.8534&lon=-71.3624&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 1 uninjured - Status: Completed, report May 8, 2001 - Report: Approved by Office Director - NTSB case key (mKey): 51301 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC01LA043 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/51301/pdf - Page: https://openairdocs.org/ntsb/NYC01LA043 ## Probable cause The pilot's failure to obtain the proper touchdown point. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Roll over, landing - proper touchdown point - not obtained, pilot in command (cause) - In flight collision with terrain/water, descent - uncontrolled - terrain condition - ground ## Analysis The student pilot (SP) was attempting to off-load the helicopter from a trailer, which was parked at his residence. He stated that as he lifted the helicopter to a hover, 'something didn't feel just right' and he gently started to lower the collective, with the intent of landing back onto the trailer. At that point, the helicopter began to rollover. The SP further stated, 'As I gave a quick glance in the mirror, I saw that the right strut had jumped the one inch lip of the trailer and was going down over the side....' The helicopter impacted the ground and came to rest on it's left side. The SP reported 39 hours of total helicopter flight experience, all in make and model. Additionally, he stated he had landed and departed from the trailer approximately one dozen times prior to the accident. Examination of the helicopter did not reveal any mechanical malfunctions; nor did the SP report any. ## Factual narrative On November 21, 2000, about 0900 Eastern Standard Time, a Robinson R-22, N8117Y, was substantially damaged while landing on a trailer in Londonderry, New Hampshire. The student pilot (SP) was not injured. Visual meteorological conditions prevailed and no flight plan had been filed for the personal flight conducted under 14 CFR Part 91. The SP said he was attempting to off-load the helicopter from the trailer, which was parked at his residence. The trailer was equipped with mirrors that could be used to check the helicopter's skid position just before touching down on the trailer. In a written statement, the SP said that as he lifted the helicopter to a hover, "something didn't feel just right" and he gently started to lower the collective, with the intent of landing back onto the trailer. At that point, the helicopter began to rollover. The SP further stated, "As I gave a quick glance in the mirror, I saw that the right strut had jumped the one inch lip of the trailer and was going down over the side. I did try to force the helicopter back on to the trailer, but the rollover continued as the helicopter went out of control..." The helicopter impacted the ground and came to rest on it's left side. The SP reported 39 hours of total helicopter flight experience, all in the R-22. Additionally, he stated he had landed and departed from the trailer approximately one dozen times prior to the accident. Examination of the helicopter by a Federal Aviation Administration inspector did not reveal any mechanical malfunctions; nor did the SP report any. ## Aircraft - Registration: [N8117Y](https://openairdocs.org/deregistered/N8117Y-2003-05-21), registration cancelled 2003-05-21, S/N 2404, built 1994 (OpenAirDocs) - Reported make and model: Robinson R-22 - Registry model: [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta) (registry code 7640110) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Helicopter - Serial number: 2404 - Airframe hours: 2060 - Engines: Lycoming O-320-B2C 124 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Richard Pomroy - Airworthiness certificate: Standard, Normal - Last inspection: Annual, June 7, 2000, 56 hours before - Departed: NONE - Destination: NONE ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 55; student; medical: class 3, valid medical--no waivers/lim.; seat: right; flight hours: 72 total, 39 in this make and model, 17 as pilot in command, 39 in the last 90 days, 24 in the last 30 days, 2 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 240° at 3 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 32 °F, dew point 19 °F - Altimeter: 29.00 inHg - Observed at: MHT, 15 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20001121018299A](https://openairdocs.org/incident/20001121018299A), Nov 21, 2000: Robsin R22BETA, Londonderry, NH, No damage. (-23) While unloading aircraft from trailer, pilot was hovering caught the right rear skid on trailer. Pilot attempted to set the aircraft back down on trailer… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.