# NTSB investigations: Pratt & Whitney R-985 series: Loss of control - in flight

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 ANC07MA083](https://openairdocs.org/ntsb/ANC07MA083.md): de Havilland DHC-2 · Ketchikan, AK · Accident · 5 fatal · Major investigation · Final report · Aug 17, 2007 · N345KA · Destroyed
  > An inadvertent aerodynamic stall resulting from the pilot's poor decision-making and inadequate planning and execution when he took off toward nearby rising terrain, in strong winds, under circumstances where his options for maneuvering were severely limited…
- [NTSB DFW06CA113](https://openairdocs.org/ntsb/DFW06CA113.md): Grumman-Schweizer G-164B · De Witt, AR · Accident · Minor injuries · Data collection · Final report · Apr 28, 2006 · N48717 · Destroyed
  > The pilot's failure to maintain control of the airplane during takeoff. A contributing factor was the gusty winds.
- [NTSB DFW06LA087](https://openairdocs.org/ntsb/DFW06LA087.md): Weatherly 201B · Hondo, TX · Accident · 1 fatal · Limited investigation · Final report · Mar 21, 2006 · N1257W · Substantial damage
  > A loss of aircraft control for undetermined reasons.
- [NTSB DFW05CA212](https://openairdocs.org/ntsb/DFW05CA212.md): Grumman G164B · Alexandria, LA · Accident · No injuries · Data collection · Final report · Aug 16, 2005 · N6903K · Substantial damage
  > The pilot's failure to maintain adequate airspeed which resulted in a stall. A contributing factor was the high density altitude.
- [NTSB IAD05LA038](https://openairdocs.org/ntsb/IAD05LA038.md): Grumman G-21A · Penn Yan, NY · Accident · Minor injuries · Limited investigation · Final report · Feb 15, 2005 · N327 · Destroyed
  > The flight instructor's inadequate planning/decision and his remedial action to conduct or recover from a simulated emergency procedure.
- [NTSB LAX04FA330](https://openairdocs.org/ntsb/LAX04FA330.md): Bushmaster 2000 · Fullerton, CA · Accident · Serious injuries · Field investigation · Final report · Sep 25, 2004 · N750RW · Destroyed
  > the inadequate preflight inspection by the pilot-in-command, where the pilot failed to remove the makeshift gust lock attached to the rudder and left elevator of the airplane. As a result, the airplane veered off the runway surface during the takeoff roll,…
- [NTSB CHI04CA163](https://openairdocs.org/ntsb/CHI04CA163.md): Grumman G-164A · Hutchinson, MN · Accident · No injuries · Data collection · Final report · Jun 23, 2004 · N5339 · Substantial damage
  > The pilot's failure to maintain airspeed during the low altitude turn after takeoff. A factor to the accident was the low altitude and the swampy terrain condition.
- [NTSB LAX04CA010](https://openairdocs.org/ntsb/LAX04CA010.md): Avions Max Holste MH 1521 Broussard · El Cajon, CA · Accident · No injuries · Data collection · Final report · Oct 11, 2003 · N239HL · Substantial damage
  > the pilot's premature liftoff and his failure to attain an adequate takeoff airspeed, which resulted in a stall. The pilot's failure to correctly set the pitch trim before takeoff was a factor.
- [NTSB NYC04CA005](https://openairdocs.org/ntsb/NYC04CA005.md): Howard DGA-15P · Leonardtown, MD · Accident · No injuries · Data collection · Final report · Oct 9, 2003 · N9271H · Substantial damage
  > The pilot's failure to maintain directional control during an aborted landing.
- [NTSB LAX03LA239](https://openairdocs.org/ntsb/LAX03LA239.md): Grumman G-164 · Hamilton City, CA · Accident · No injuries · Limited investigation · Final report · Jul 22, 2003 · N477Y · Substantial damage
  > The pilot's failure to maintain adequate airspeed to avert stalling during a low altitude turn.
- [NTSB LAX03FA111](https://openairdocs.org/ntsb/LAX03FA111.md): Beech 3NM · Anza, CA · Accident · 3 fatal · Field investigation · Final report · Mar 11, 2003 · N14437 · Destroyed
  > the failure of the pilot to maintain an adequate airspeed resulting in a stall and loss of control.
- [NTSB ANC02LA123](https://openairdocs.org/ntsb/ANC02LA123.md): de Havilland DHC-2 · Bethel, AK · Accident · No injuries · Limited investigation · Final report · Sep 20, 2002 · N144Q · Substantial damage
  > The instructor pilot's inadequate preflight by his failure to remove all frost from the wings prior to takeoff, which resulted in an inadvertent stall and in-flight collision with terrain.
- [NTSB CHI02CA194](https://openairdocs.org/ntsb/CHI02CA194.md): Grumman G-164 · Browning, IL · Accident · No injuries · Data collection · Final report · Jul 17, 2002 · N623U · Substantial damage
  > the failure of the pilot-in-command to maintain sufficient airspeed while maneuvering. The initial stages of a stall/mush condition, and the low maneuvering altitude due to the agricultural application pass, were contributing factors.
- [NTSB ATL02LA131](https://openairdocs.org/ntsb/ATL02LA131.md): Beech 18 · Venice, FL · Accident · No injuries · Limited investigation · Final report · Jun 26, 2002 · N1002C · Destroyed
  > The pilot's improper use of flight controls during takeoff, that resulted in the loss of control during takeoff.
- [NTSB ANC02FA028](https://openairdocs.org/ntsb/ANC02FA028.md): Beech E18S · Juneau, AK · Accident · 1 fatal · Field investigation · Final report · Apr 11, 2002 · N686Q · Destroyed
  > The pilot's excessive loading of the airplane that precipitated an inadvertent stall/mush during the initial climb.
- [NTSB CHI01LA273](https://openairdocs.org/ntsb/CHI01LA273.md): Grumman G-164B · Hazelton, ND · Accident · 1 fatal · Limited investigation · Final report · Aug 11, 2001 · N48624 · Destroyed
  > the pilot's ostentatious display when he performed a low level manuever and stalled the airplane.
- [NTSB FTW01FA117](https://openairdocs.org/ntsb/FTW01FA117.md): Convair BT-13A · Odessa, TX · Accident · 2 fatal · Field investigation · Final report · May 14, 2001 · N66791 · Destroyed
  > the pilot's failure to maintain the minimum required airspeed for flight, which resulted in a loss of control while performing a go-around. A contributing factor to the accident was the gusty tailwind condition.
- [NTSB NYC99LA119](https://openairdocs.org/ntsb/NYC99LA119.md): Howard DGA-15P · Covington, KY · Accident · No injuries · Limited investigation · Final report · May 25, 1999 · N79M · Substantial damage
  > The pilot's failure to maintain directional control during the takeoff/initial climb. A factor in the accident was the crosswind condition.
- [NTSB FTW99LA101](https://openairdocs.org/ntsb/FTW99LA101.md): Grumman G-164B · Jennings, LA · Accident · No injuries · Limited investigation · Final report · Mar 26, 1999 · N6758Q · Substantial damage
  > The pilot's inadvertent stall during the departure turn to downwind. A factor was the tailwind.
- [NTSB MIA99FA095](https://openairdocs.org/ntsb/MIA99FA095.md): Beech AT11/18 · Tampa, FL · Accident · 2 fatal · Field investigation · Final report · Feb 27, 1999 · N65860 · Destroyed
  > the pilot's failure to maintain control of the airplane resulting in an inadvertent stall at too low an altitude to allow for recovery.
- [NTSB FTW98LA058](https://openairdocs.org/ntsb/FTW98LA058.md): Gulfstream-Schweizer G-164B · Lecompte, LA · Accident · Serious injuries · Limited investigation · Final report · Nov 24, 1997 · N2LU · Substantial damage
  > a loose battery cover, due to improper installation by maintenance personnel, that became jammed with an elevator control rod and restricted the movement of the elevator control system, which subsequently led to an uncontrolled impact with a tree, shortly…
- [NTSB SEA97LA169](https://openairdocs.org/ntsb/SEA97LA169.md): Weatherly 620B · Newdale, ID · Accident · No injuries · Limited investigation · Final report · Jul 17, 1997 · N9022H · Substantial damage
  > The pilot's inadequate preflight/planning preparation which resulted in the aircraft exceeding the maximum gross weight, and inability to climb. A factor was high density altitude.
- [NTSB LAX97FA108](https://openairdocs.org/ntsb/LAX97FA108.md): Beech H18 · Honolulu, HI · Accident · Minor injuries · Field investigation · Final report · Feb 22, 1997 · N7969K · Destroyed
  > loss of aircraft control for undetermined reason(s).
- [NTSB CHI95LA272](https://openairdocs.org/ntsb/CHI95LA272.md): Grumman G-164 · Wadena, MN · Accident · Minor injuries · Limited investigation · Final report · Aug 13, 1995 · N48611 · Substantial damage
  > the pilot's inattentiveness during the reversal turn, the pilot not maintaining control of the airplane, and the stall/mush encountered by the pilot.
- [NTSB ATL95LA122](https://openairdocs.org/ntsb/ATL95LA122.md): Weatherly 201B · Andalusia, AL · Accident · No injuries · Limited investigation · Final report · Jun 30, 1995 · N1254W · Substantial damage
  > The pilot's failure to maintain airspeed in a climbing turn, that resulted in an inadvertent stall.
- [NTSB FTW95LA197](https://openairdocs.org/ntsb/FTW95LA197.md): Grumman G-164A · Abbeville, LA · Accident · No injuries · Limited investigation · Final report · May 12, 1995 · N8509H · Substantial damage
  > The inadvertent stall.
- [NTSB CHI95LA053](https://openairdocs.org/ntsb/CHI95LA053.md): Beech E18S · Kansas City, MO · Accident · 1 fatal · Limited investigation · Final report · Dec 9, 1994 · N5647D · Destroyed
  > Failure of the pilot to maintain adequate airspeed on final approach, which resulted in an inadvertent stall/spin. Factors related to the accident were: the adverse weather (icing) conditions, the accumulation of airframe/wing ice, the pilot's improper use of…
- [NTSB FTW94LA270](https://openairdocs.org/ntsb/FTW94LA270.md): Grumman G-164B · Shreveport, LA · Accident · 1 fatal · Limited investigation · Final report · Aug 12, 1994 · N48664 · Destroyed
  > The pilot's incapacitation due to a heart attack.
- [NTSB LAX94LA155](https://openairdocs.org/ntsb/LAX94LA155.md): Grumman G-164B · Chico, CA · Accident · No injuries · Limited investigation · Final report · Mar 4, 1994 · N6528K · Substantial damage
  > the failure of the pilot to obtain/maintain sufficient flying speed during a downwind takeoff and climb, compounded by his reluctance to use full available takeoff power.
- [NTSB CHI92DTG03](https://openairdocs.org/ntsb/CHI92DTG03.md): Grumman G-164A · Orr, ND · Accident · No injuries · Final report · Jun 24, 1992 · N9935 · Substantial damage
  > A stall encountered during the spray run reversal turn. Factors related to the accident are the attempted downwind turn, and insufficient altitude for recovery.
- [NTSB NYC92LA102](https://openairdocs.org/ntsb/NYC92LA102.md): Grumman 164A · Bridgeton, NJ · Accident · No injuries · Limited investigation · Final report · Jun 8, 1992 · N48399 · Substantial damage
  > The pilot's improper application of takeoff power which resulted in a lengthened takeoff roll, and his subsequent steep turn to avoid an obstacle causing the airplane to stall at a low altitude.
- [NTSB FTW92LA103](https://openairdocs.org/ntsb/FTW92LA103.md): Snow S2C · Roby, TX · Accident · No injuries · Limited investigation · Final report · Apr 3, 1992 · N1619S · Substantial damage
  > The pilot's inadvertent stall of the airplane while maneuvering and subsequent loss of control.
- [NTSB FTW92LA093](https://openairdocs.org/ntsb/FTW92LA093.md): Boeing A-75N1 · Edna, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 19, 1992 · N53084 · Destroyed
  > The pilot's failure to maintain control of the airplane and the subsequent stall. A factor was the pilot's diversion of attention.
- [NTSB ANC90FA027](https://openairdocs.org/ntsb/ANC90FA027.md): Beech E18F · Anchorage, AK · Accident · No injuries · Field investigation · Final report · Jan 15, 1990 · N900TH · Substantial damage
  > Inadequate supervision by company/operator personnel and inadequate preflight planning/preparation by the captain, which resulted in an improperly loaded aircraft.
- [NTSB ANC90LA022](https://openairdocs.org/ntsb/ANC90LA022.md): de Havilland DHC-2 · Kodiak, AK · Accident · No injuries · Limited investigation · Final report · Dec 28, 1989 · N67691 · Substantial damage
  > Improper compensation for wind conditions by the pilot, which resulted in loss of aircraft control during takeoff, and subsequent impact with the water. The weather conditions were contributing factors.
- [NTSB DEN89LA160](https://openairdocs.org/ntsb/DEN89LA160.md): Grumman-Schweizer G-164B · Holden, UT · Accident · No injuries · Limited investigation · Final report · Jul 8, 1989 · N6754Q · Substantial damage
  > The pilot's misjudgement of the effect of high density altitude on a heavily loaded aircraft.
- [NTSB SEA89FA027](https://openairdocs.org/ntsb/SEA89FA027.md): de Havilland DHC-2 · Kasaan, AK · Accident · 1 fatal · Field investigation · Final report · Dec 14, 1988 · N89U · Destroyed
  > The plt planned to land at a seaplane base that was located in a bowl-shaped cove. Drg the landing, the acft touched down long on water swells & the plt elected to go around. Witnesses rprtd that drg the go-around, the plt initiated a steep turn while still…
- [NTSB DEN88FA114](https://openairdocs.org/ntsb/DEN88FA114.md): Beech D-17S · Wheatland, WY · Accident · 2 fatal · Field investigation · Final report · May 28, 1988 · N1038M · Destroyed
  > The witnesses said they saw the acft fly a pattern indicative of a base to final approach to rwy 35. The airstrip has a second runway oriented east and west. The wind was blowing from the east at 20 knots. The acft wreckage was found approximately 3/4 miles…
- [NTSB DEN88DTE04](https://openairdocs.org/ntsb/DEN88DTE04.md): Grumman G-164A · Vona, CO · Accident · No injuries · Final report · May 7, 1988 · N8518H · Substantial damage
  > The pilot said the wind was calm when he got in the aircraft before takeoff. He said that when the aircraft reached about 50 feet AGL, after takeoff, he encountered a tailwind. The aircraft settled and collided with the ground. The ground was soft and the…
- [NTSB DEN87LA101](https://openairdocs.org/ntsb/DEN87LA101.md): Boeing A75N1 · Argusville, ND · Accident · Minor injuries · Limited investigation · Final report · Apr 16, 1987 · N63915 · Substantial damage
  > The plt took off with a load of 46-0-0 fertilizer and proceeded to the field to be treated. The plt said when he arrived his flagger was not in position so he initiated a goaround. When the plt had turned 90 deg onto the x-wind leg the acft stalled. The plt…
- [NTSB ATL86FLQ05](https://openairdocs.org/ntsb/ATL86FLQ05.md): Beech H-18 · Louisville, KY · Accident · Serious injuries · Final report · Feb 12, 1986 · N148PA · Substantial damage
  > The acft collided with the ground after stalling during takeoff. Witnesses reported that the acft pitched up in two increments, climbed sharply to about 200 ft AGL, stalled dropped the rt wing and descended, impacting the ground in a flat attitude.
- [NTSB FTW86FPA13](https://openairdocs.org/ntsb/FTW86FPA13.md): Beech E18S · Terrell, TX · Accident · No injuries · Final report · Jan 2, 1986 · N27Y · Substantial damage
  > The plt reported the acft yawed left on takeoff and despite attempted remedial action the acft would not clear odstaclesalong the flt path. Pwr was reduced and a straight in landing was made in a fld aprx 1/4 mile north of the rwy. A witness reported the acft…
- [NTSB LAX86FA014](https://openairdocs.org/ntsb/LAX86FA014.md): Boeing A75N1 · Schellville, CA · Accident · 1 fatal · Field investigation · Final report · Oct 13, 1985 · N46871 · Destroyed
  > The acft crashed while attempting a slow roll immediately after departing from rwy 34 at the sonoma valley arpt. The plt stated to witnesses that he liked to roll his acft after takeoff. Witnesses indicated the acft became airborne after a 300 to 400 ft…
- [NTSB CHI85LA188](https://openairdocs.org/ntsb/CHI85LA188.md): Stearman PT 17 · Hamilton, OH · Accident · No injuries · Limited investigation · Final report · May 5, 1985 · N59221 · Substantial damage
  > The pilot was taking off in a 90 degree cross wind of 15 KTS gusts 23 KTS immediatly after liftoff a gust of wind resulted in pilot loss of directional control the acft veered off of the runway struck a ditch and nosed over inverted.
- [NTSB CHI85IA091](https://openairdocs.org/ntsb/CHI85IA091.md): Beech H-18 · Dayton, OH · Incident · No injuries · Incident investigation · Final report · Jan 14, 1985 · N135W · Minor damage
  > The acft was rotated prematurely and stalled back onto the rwy. The acft was on rwy 24L and the wind was 240 degrees at 17 KTS gusting to 24 KTS. There was slight damage to the landing gear & flaps
- [NTSB LAX84LA084](https://openairdocs.org/ntsb/LAX84LA084.md): Grumman G-164B · Madera, CA · Accident · No injuries · Limited investigation · Final report · Nov 30, 1983 · N31184 · Substantial damage
  > At about 75 ft AGL in a procedure turnaround the acft stalled & collided with orange trees.
- [NTSB SEA83LA154](https://openairdocs.org/ntsb/SEA83LA154.md): Weatherly 201C · Tensed, ID · Accident · No injuries · Limited investigation · Final report · Jul 21, 1983 · N9089W · Substantial damage
  > The acft had made 3 passes since reloading, so the acft was fairly heavy and was on an uphill pass as it began a turn- around. In an attempt to maneuver and clear 100 ft trees the acft stalled and the rt wing tip hit a tree.
- [NTSB MIA83LA135](https://openairdocs.org/ntsb/MIA83LA135.md): Grumman G-164A · Clewiston, FL · Accident · No injuries · Limited investigation · Final report · May 2, 1983 · N8573H · Substantial damage
  > The plt had just washed the acft & went for a short local flt to dry it. He made a low pass at the arpt & the acft stalled during the pull-up.
- [NTSB MKC82DA116](https://openairdocs.org/ntsb/MKC82DA116.md): Grumman G164A · Ericson, NE · Accident · No injuries · Final report · Jul 4, 1982 · N48534 · Substantial damage
  > The aircraft was flown from the loading area to the field intended for treatment. Upon arrival, the pilot reduced power and entered an observation fly-by. When the aircraft started to settle the pilot's application of power failed to arrest the descent. The…
- [NTSB LAX82FA224](https://openairdocs.org/ntsb/LAX82FA224.md): Beech H-18 · Fresno, CA · Accident · No injuries · Field investigation · Final report · Jun 19, 1982 · N74JT · Destroyed
  > Just after lift-off from rwy 29R, the acft began to pitch up. As the pitch-up progressed, the plt applied right aileron & full right rudder. The acft responded by rolling to the right with the nose falling thru. Subsequently, the plt was able to pull out…

## 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.engine_model_code IN ('52008')
    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" = 250))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=52008&occurrence=250

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