# NTSB MIA98LA012: Robinson R22 Beta, N333PH, Pompano Beach, FL, October 17, 1997 - Type: NTSB accident investigation - Classification: Accident · No injuries · Limited investigation · Final report - Date: October 17, 1997, 09:46 local (13:46 UTC) - Place: Pompano Beach, FL - Coordinates: 26.229509, -80.130691 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=26.2295&lon=-80.1307&mi=10 - Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping) - Highest injury: No injuries - Injuries: 2 uninjured - Status: Completed, report January 7, 1998 - Report: Approved by Office Director - NTSB case key (mKey): 38418 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA98LA012 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/38418/pdf - Page: https://openairdocs.org/ntsb/MIA98LA012 ## Probable cause The improper use of collective control by the dual student which prevented the flight instructor from stopping an uncontrolled roll to the left. ## Analysis During power recovery from an autorotation landing the dual student allowed the rotor speed to slow. The helicopter touched down on the aft part of the skids and then bounced forward where the left skid contacted the turf. As the helicopter started to roll to the left the student increased collective as the flight instructor was trying to regain control by decreasing collective. The helicopter rolled over to the left and came to rest. ## Factual narrative On October 17, 1997, about 0946 eastern daylight time, a Robinson R22 Beta, N333PH, registered to Pompano Helicopters, Inc., rolled over during landing at Pompano Beach Airpark, Pompano Beach, Florida, while on a Title 14 CFR Part 91 instructional flight. Visual meteorological conditions prevailed at the time and no flight plan was filed. The helicopter received substantial damage and the commercial-rated flight instructor and dual student were not injured. The flight originated from Pompano Beach, the same day, about 0930. The flight instructor stated they were performing an autorotation landing. The student was flying the helicopter. The student flared for landing and as the helicopter leveled it was still moving forward slowly. The student initiated a power recovery at which time the low rotor rpm horn sounded and the helicopter began to settle. The back of the skids hit the turf and they bounced forward. The left skid hit the turf and the helicopter began to lift up. The student continued to raise up on the collective as the instructor was trying to push down on the collective. The instructor was not able to establish a proper recovery and the helicopter turned over to the left as a result of dynamic roll over. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Roll over, landing - flare/touchdown - collective - improper use of, dual student (cause) - aircraft control - not possible, pilot in command(cfi) - dynamic rollover ## Aircraft - Registration: [N333PH](https://openairdocs.org/aircraft/N333PH), registered now, S/N 2326, built 1993 (OpenAirDocs) - Reported make and model: Robinson R22 BETA - 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: 2326 - Airframe hours: 3548 - Engines: Lycoming O-320-B2C 160 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Registered owner: Pompano Helicopters, Inc. - Airworthiness certificate: Standard, Normal - Departed: PMP - Airport: PMP, Pompano Beach Airpark, runway 32, 4,419 × 150 ft, grass/turf ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 28; commercial, flight instructor; instrument ratings: helicopter; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 249 total, 120 in this make and model, 200 as pilot in command, 74 in the last 90 days, 29 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: calm - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 70 °F - Altimeter: 29.00 inHg - Observed at: PMP, 1 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 19971017031389A](https://openairdocs.org/incident/19971017031389A), Oct 17, 1997: Robsin R22BETA, Pompano Beach, FL, Substantial damage. Practice autoratation. Student flared. Rotor decay. Left skid touced. CFI blocked by student. Made dynamic rollover. (-23) aircraft suffered substantial damage… 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.