# NTSB investigations, 2011: Emergency descent

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 ERA12LA112](https://openairdocs.org/ntsb/ERA12LA112.md): Piper PA-38-112 · Merry Hill, NC · Accident · Serious injuries · Limited investigation · Final report · Dec 16, 2011 · N9279T · Substantial damage
  > Operation of the airplane by a non-certificated pilot. Contributing to the accident was the non-certificated pilot’s failure to maintain airspeed while making a forced landing following a total loss of engine power at low altitude, which resulted in an…
- [NTSB ERA12CA095](https://openairdocs.org/ntsb/ERA12CA095.md): Bell 206L-3 · Wingate, NC · Accident · No injuries · Data collection · Final report · Dec 1, 2011 · N216TV · Substantial damage
  > The certified flight instructor did not select an adequate landing site for the practice autorotation.
- [NTSB WPR12LA029](https://openairdocs.org/ntsb/WPR12LA029.md): Bell 47D1 · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Nov 8, 2011 · N4251A · Substantial damage
  > The flight instructor's inadequate supervision of the student pilot during a simulated autorotation and the pilots’ failure to use carburetor heat while operating at reduced engine power while in carburetor icing conditions, which resulted in a loss of engine…
- [NTSB WPR11LA462](https://openairdocs.org/ntsb/WPR11LA462.md): Hughes 269C · Ramona, CA · Accident · No injuries · Limited investigation · Final report · Sep 22, 2011 · N1088Y · Substantial damage
  > The flight instructor’s failure to follow the proper procedure while demonstrating a practice autorotation, which resulted in a total loss of engine power and subsequent hard landing.
- [NTSB CEN11LA688](https://openairdocs.org/ntsb/CEN11LA688.md): Taylorcraft BC12-D · Berryville, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 28, 2011 · N8617 · Substantial damage
  > The pilot did not maintain control of the airplane during a forced landing, which resulted in an aerodynamic stall. Contributing to the accident was the loss of engine power for undetermined reasons.
- [NTSB ERA11WA472](https://openairdocs.org/ntsb/ERA11WA472.md): Agusta AW139 · Brazil · Accident · 4 fatal · Foreign investigation · Aug 19, 2011 · PR-SEK · Substantial damage
  > On August 19, 2011, at 1948 coordinated universal time (16:48 local time), an Agusta, AW139, helicopter, Brazilian registration PT-SEK, impacted into the Atlantic Ocean, near an oil rig, identifier P-65, the helicopter sank in waters with a recorded floor…
- [NTSB CEN11FA528](https://openairdocs.org/ntsb/CEN11FA528.md): Wright B Flyer Wright B Flyer · Springfield, OH · Accident · 2 fatal · Field investigation · Final report · Jul 30, 2011 · N453WB · Substantial damage
  > The flight crew’s failure to maintain airplane control following a partial loss of engine thrust during cruise flight. Contributing to the accident was the failed weld as a result of incomplete welding on the left propeller shaft, which led to the partial…
- [NTSB ERA11FA414](https://openairdocs.org/ntsb/ERA11FA414.md): Cirrus Design SR22 · Palm Bay, FL · Accident · 2 fatal · Field investigation · Final report · Jul 23, 2011 · N122HB · Substantial damage
  > The pilot’s failure to maintain adequate airspeed while maneuvering for a forced landing, resulting in an inadvertent aerodynamic stall. Contributing to the accident were the pilot’s failure to secure the oil gauge rod and cap assembly before flight and his…
- [NTSB WPR11TA274](https://openairdocs.org/ntsb/WPR11TA274.md): Bell 206B · Franklin, CA · Accident · No injuries · Final report · Jun 21, 2011 · N38EA · Substantial damage
  > The student pilot's failure to maintain rotor rpm during the practice autorotation.
- [NTSB CEN11LA397](https://openairdocs.org/ntsb/CEN11LA397.md): Schweizer 269C · Grand Forks, ND · Accident · No injuries · Limited investigation · Final report · Jun 15, 2011 · N2077E · Substantial damage
  > The student pilot's inadequate recovery from an autorotation and the CFI's delayed remedial action.
- [NTSB WPR11CA243](https://openairdocs.org/ntsb/WPR11CA243.md): Bell 206B3 · Glendale, AZ · Accident · No injuries · Data collection · Final report · May 27, 2011 · N59383 · Substantial damage
  > The certified flight instructor's failure to maintain adequate main rotor RPM during the autorotation.
- [NTSB CEN11FA285](https://openairdocs.org/ntsb/CEN11FA285.md): Hawker-Beechcraft E-55 · De Queen, AR · Accident · 1 fatal · Field investigation · Final report · Apr 15, 2011 · N3959W · Substantial damage
  > The pilot’s loss of control during takeoff for undetermined reasons.
- [NTSB CEN11LA311](https://openairdocs.org/ntsb/CEN11LA311.md): Mooney M20K · New Orleans, LA · Accident · No injuries · Limited investigation · Final report · Apr 7, 2011 · N305M · Substantial damage
  > A loss of electrical and engine power for undetermined reasons.
- [NTSB ERA11LA200](https://openairdocs.org/ntsb/ERA11LA200.md): Piper PA-18A 150 · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Mar 19, 2011 · N9692D · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB ERA11CA166](https://openairdocs.org/ntsb/ERA11CA166.md): Enstrom F-28C · Fort Pierce, FL · Accident · Minor injuries · Data collection · Final report · Feb 26, 2011 · N5689B · Substantial damage
  > The pilot's improper fuel management, which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB CEN11LA204](https://openairdocs.org/ntsb/CEN11LA204.md): Cessna 172N · Andrews, TX · Accident · Serious injuries · Limited investigation · Final report · Feb 25, 2011 · N739BL · Substantial damage
  > The pilot's failure to maintain adequate airspeed during an emergency descent, following a loss of engine power, which resulted in an inadvertent stall.
- [NTSB WPR11CA121](https://openairdocs.org/ntsb/WPR11CA121.md): Robinson R44 · Ogden, UT · Accident · No injuries · Data collection · Final report · Feb 4, 2011 · N441TB · Substantial damage
  > The certified flight instructor’s failure to maintain adequate main rotor blade rpm during a practice autorotation, resulting in a hard landing and rollover.
- [NTSB WPR11CA101](https://openairdocs.org/ntsb/WPR11CA101.md): Bell 206B3 · Three Forks, MT · Accident · No injuries · Data collection · Final report · Jan 15, 2011 · N78BR · Substantial damage
  > The pilot’s inadequate use of throttle during the practice autorotation that resulted in a hard landing.

## The whole list in SQL

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

```sql
WITH phase_names(main, name) AS (VALUES (100, 'Prior to flight'), (150, 'Standing'), (200, 'Pushback/towing'), (250, 'Taxi'), (300, 'Takeoff'), (350, 'Initial climb'), (400, 'Enroute'), (450, 'Maneuvering'), (500, 'Approach'), (550, 'Landing'), (600, 'Emergency descent'), (650, 'Uncontrolled descent'), (700, 'Post-impact'), (750, 'After landing'), (800, 'Other'), (990, 'Unknown')),
  crosswalk(code, main, name) AS (VALUES (500, 150, 'Standing'), (501, 150, 'Standing - pre-flight'), (502, 150, 'Standing - starting engine(s)'), (503, 150, 'Standing - engine(s) operating'), (504, 150, 'Standing - engine(s) not operating'), (505, 150, 'Standing - idling rotors'), (510, 250, 'Taxi'), (511, 200, 'Taxi - pushback/tow'), (512, 250, 'Taxi - to takeoff'), (513, 250, 'Taxi - from landing'), (514, 250, 'Taxi - aerial'), (520, 300, 'Takeoff'), (521, 300, 'Takeoff - roll/run'), (522, 350, 'Takeoff - initial climb'), (523, 300, 'Takeoff - aborted'), (530, 400, 'Climb'), (531, 400, 'Climb - to cruise'), (540, 400, 'Cruise'), (541, 400, 'Cruise - normal'), (542, 400, 'Maneuvering - holding (IFR)'), (550, 400, 'Descent'), (551, 400, 'Descent - normal'), (552, 600, 'Descent - emergency'), (553, 650, 'Descent - uncontrolled'), (560, 500, 'Approach'), (561, 500, 'Approach - VFR pattern - downwind'), (562, 500, 'Approach - VFR pattern - base turn'), (563, 500, 'Approach - VFR pattern - base leg/base to final'), (564, 500, 'Approach - VFR pattern - final approach'), (565, 500, 'Go-around (VFR)'), (566, 500, 'Approach - IAF to FAF/outer marker (IFR)'), (567, 500, 'Approach - FAF/outer marker to threshold (IFR)'), (568, 500, 'Circling (IFR)'), (569, 500, 'Missed approach (IFR)'), (570, 550, 'Landing'), (571, 550, 'Landing - flare/touchdown'), (572, 550, 'Landing - roll'), (573, 550, 'Landing - aborted'), (574, 550, 'Emergency landing'), (575, 550, 'Emergency landing after takeoff'), (576, 600, 'Emergency descent/landing'), (580, 450, 'Maneuvering'), (581, 450, 'Maneuvering - aerial application'), (582, 450, 'Maneuvering - turn to reverse direction'), (583, 450, 'Maneuvering - turn to landing area (emergency)'), (590, 450, 'Hover'), (591, 450, 'Hover - in ground effect'), (592, 450, 'Hover - out of ground effect'), (600, 800, 'Other'), (610, 990, 'Unknown')),
  current_codes AS (
    SELECT e.case_mkey, TRY_CAST(e."tier1Number" AS INTEGER) AS code,
      row_number() OVER (PARTITION BY e.case_mkey ORDER BY coalesce(e."isDefiningEvent", false) DESC, e.position) AS n
    FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' e
    WHERE e.aircrafts_position = 1 AND e."tier1Number" GLOB '[1-9][0-9]*'
      AND (e."isDefiningEvent" OR e.case_mkey IN (SELECT "mKey" FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' WHERE "isPre1982"))
  ),
  phases AS (
    SELECT case_mkey, 'current' AS scheme, code, CASE WHEN code >= 990 THEN 990 ELSE code // 50 * 50 END AS main
    FROM current_codes WHERE n = 1
    UNION ALL
    SELECT o.case_mkey, 'older', o."phaseOfFlightCode", w.main
    FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o JOIN crosswalk w ON w.code = o."phaseOfFlightCode"
    WHERE o.aircrafts_position = 1 AND o."occurrenceNumber" = 1 AND o.case_mkey NOT IN (SELECT case_mkey FROM current_codes)
  ),
  case_phases AS (
    SELECT p.*, c."eventDate", c."highestInjuryLevel" = 'Fatal' AS fatal, a.aircraft_model_code
    FROM phases p JOIN 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c ON c."mKey" = p.case_mkey
    LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = p.case_mkey AND a.position = 1
    WHERE c."eventDate" >= DATE '1962-01-01' AND p.main IN (SELECT main FROM phase_names)
  )
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 year(c."eventDate") = 2011
  AND c."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 600)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/600/cases?year=2011

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