# NTSB investigations, WA: 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 WPR23LA295](https://openairdocs.org/ntsb/WPR23LA295.md): Fish Larry W Lancair 360 · Renton, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 31, 2023 · N68XA · Substantial damage
  > A loss of electrical power due to low battery voltage, which resulted in an inflight shut down of the capacitor discharge ignition system and a loss of engine power. Contributing to the accident was the pilot’s failure to switch batteries after the electrical…
- [NTSB WPR19LA168](https://openairdocs.org/ntsb/WPR19LA168.md): Sikorsky UH19 · Brewster, WA · Accident · Minor injuries · Class 3 · Limited · Final report · May 29, 2019 · N955TC · Substantial damage
  > A reported mechanical malfunction and a hard landing for reasons that could not be determined based on available evidence.
- [NTSB GAA16CA258](https://openairdocs.org/ntsb/GAA16CA258.md): Bell OH 58 · Waitsburg, WA · Accident · No injuries · Data collection · Final report · May 21, 2016 · N543SD · Substantial damage
  > The pilot's failure to maintain clearance from the power line during low reconnaissance flight, which resulted in a power line strike, loss of control, and a subsequent hard landing.
- [NTSB WPR10LA336](https://openairdocs.org/ntsb/WPR10LA336.md): Johnson Helicycle · Arlington, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 8, 2010 · N62AJ · Substantial damage
  > An undetermined airframe vibration which led to precautionary autorotation and hard landing.
- [NTSB SEA05LA068](https://openairdocs.org/ntsb/SEA05LA068.md): Cessna T337E · Orcas Island, WA · Accident · 1 fatal · Limited investigation · Final report · Mar 29, 2005 · N1711M · Substantial damage
  > The loss of power for undetermined reasons which resulted in a forced landing and impact with water.
- [NTSB SEA02LA115](https://openairdocs.org/ntsb/SEA02LA115.md): Seattle Aerotech Helipower 2500 · Arlington, WA · Accident · No injuries · Limited investigation · Final report · Jun 27, 2002 · N13RM · Destroyed
  > Aircraft control not maintained during a run-on landing. A vibration of unknown origin was a factor in the accident.
- [NTSB SEA01LA004](https://openairdocs.org/ntsb/SEA01LA004.md): Mooney M20K · Monroe, WA · Accident · No injuries · Limited investigation · Final report · Oct 6, 2000 · N52202 · Substantial damage
  > Oil Pump drive gear shaft separated in shear. A collision with a tree stump during the landing roll was a factor.
- [NTSB SEA80FA047](https://openairdocs.org/ntsb/SEA80FA047.md): Piper PA-24 · White Pass, WA · Accident · 4 fatal · Closed · Dec 11, 1979 · N6171P · Destroyed
- [NTSB SEA79AA029](https://openairdocs.org/ntsb/SEA79AA029.md): Hiller UH12D · Chehalis, WA · Accident · 1 fatal · Closed · Apr 3, 1979 · N64867 · Minor damage
- [NTSB SEA78DYP03](https://openairdocs.org/ntsb/SEA78DYP03.md): Hughes 369D · Spokane, WA · Accident · No injuries · Closed · Oct 12, 1977 · N8601F · Substantial damage
- [NTSB SEA77DYK20](https://openairdocs.org/ntsb/SEA77DYK20.md): Enstrom F28C · Medford, WA · Accident · No injuries · Closed · Jul 22, 1977 · N51727 · Substantial damage

## 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 c."eventStateOrRegion" = 'WA' AND c."eventCountry" = 'USA'
  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?state=WA

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