# NTSB investigations: Robinson Helicopter R22: Loss of engine power

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB DEN04LA142](https://openairdocs.org/ntsb/DEN04LA142.md): Robinson R22 · Spanish Fork, UT · Accident · Minor injuries · Limited investigation · Final report · Sep 14, 2004 · N777UH · Substantial damage
  > the instructor's premature flare, resulting in a hard landing, and his failure to align the helicopter with the direction of travel, resulting in a rollover.Contributing factors were the low rotor RPM and inadequate airspeed. The reason for the loss of engine…
- [NTSB NYC99FA157](https://openairdocs.org/ntsb/NYC99FA157.md): Robinson R-22 · Hurricane, WV · Accident · 1 fatal · Field investigation · Final report · Jun 23, 1999 · N9070F · Substantial damage
  > A loss of engine power for undetermined reasons. Contributing to the accident was the pilot's failure to maintain rotor rpm and the transmission wires.
- [NTSB NYC89LA041](https://openairdocs.org/ntsb/NYC89LA041.md): Robinson R22 · Sharon, MA · Accident · Minor injuries · Limited investigation · Final report · Nov 29, 1988 · N9035U · Substantial damage
  > Engine power loss while landing due to fuel exhaustion.
- [NTSB NYC87LA217](https://openairdocs.org/ntsb/NYC87LA217.md): Robinson R22 · Sterling, MA · Accident · No injuries · Limited investigation · Final report · Aug 2, 1987 · N9078Z · Destroyed
  > Before flying solo, the student plt & his instructor (CFI) practiced autorotations for about 1/2 hr. The CFI deplaned & the student took off on a solo flt. He flew to a reservoir area for more practice. After descending from about 1000' to 500', the eng lost…
- [NTSB BFO86LA007](https://openairdocs.org/ntsb/BFO86LA007.md): Robinson R-22 · Manassas, VA · Accident · No injuries · Limited investigation · Final report · Nov 29, 1985 · N8499B · Substantial damage
  > A simulated straight in autorotation to runway 34L was entered from final approach by lowering the collective, and a pwrrecovery was planned at the bottom of the autorotation. At about 150 feet AGL, the throttle was rolled in to match the engine and rotor…
- [NTSB NYC86LA013](https://openairdocs.org/ntsb/NYC86LA013.md): Robinson R22A · Sterling, MA · Accident · No injuries · Limited investigation · Final report · Oct 18, 1985 · N9069G · Substantial damage
  > The accident occurred when the CFI allowed the student who was in a hover maneuver to lose rotor RPM. The helicopter drift rearward, the left rear skid dug into the ground and the helicopter rolled over. RPM decayed so badly that the helicopter could not…
- [NTSB CHI83FET01](https://openairdocs.org/ntsb/CHI83FET01.md): Robinson R-22 · Wabash, IN · Accident · No injuries · Final report · Aug 12, 1983 · N9031F · Substantial damage
  > During autorotation practice, when the pilot rolled the throttle off, the engine quit. An engine restart was attempted. This time lapse allowed the rotor RPM to decay and a proper autorotation could not be done in theremaining altitude. The acft landed hard…

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640102')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640102&occurrence=350

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