# NTSB investigations: Standing

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.

Page 3 of 42 · 2,084 cases

## Cases, newest first

- [NTSB GAA20WA131](https://openairdocs.org/ntsb/GAA20WA131.md): Daher TB10 · Visby, Sweden · Accident · No injuries · Foreign investigation · Jun 19, 2020 · SE-IMY · Substantial damage
  > The government of Sweden has notified the NTSB of an accident involving a DAHER TB10 airplane that occurred on June 19, 2020. The NTSB has appointed a U.S. Accredited Representative to assist the government of Sweden's investigation under the provisions of…
- [NTSB CEN20CA233](https://openairdocs.org/ntsb/CEN20CA233.md): Piper J3C-65 · Mount Victory, OH · Accident · No injuries · Class 4 · Data collection · Final report · Jun 17, 2020 · N25702 · Substantial damage
  > The pilot's inadequate planning, and his failure to secure the airplane prior to hand-starting the engine.
- [NTSB CEN20LA208](https://openairdocs.org/ntsb/CEN20LA208.md): Piper PA32 · Fargo, ND · Accident · No injuries · Class 3 · Limited · Final report · Jun 3, 2020 · N3869W · Substantial damage
  > Failure of the engine driven fuel pump which led to a fuel leak and subsequent fire in the engine compartment.
- [NTSB WPR20CA150](https://openairdocs.org/ntsb/WPR20CA150.md): Air Creation Tanarg · Buckeye, AZ · Accident · Serious injuries · Class 4 · Data collection · Final report · May 16, 2020 · N837TB · No damage
  > The failure of the pilot to adequately maintain a safe distance from the airplane's propeller, which resulted in a serious injury when the propeller struck his hand.
- [NTSB DCA21WA016](https://openairdocs.org/ntsb/DCA21WA016.md): Boeing 787-800 · Mexico City, Mexico · Incident · Class 5 · Foreign · Mar 27, 2020 · N782AM · No damage
- [NTSB CEN20CA120](https://openairdocs.org/ntsb/CEN20CA120.md): Aeronca 7AC · Ankeny, IA · Accident · Serious injuries · Data collection · Final report · Mar 11, 2020 · N83032 · Substantial damage
  > The pilot's improper starting procedure, which allowed the airplane to move forward over the wheel chocks and impact him and a hangar when he subsequently hand propped the engine.
- [NTSB ERA20CA117](https://openairdocs.org/ntsb/ERA20CA117.md): Piper PA28 · Wilmington, DE · Accident · Serious injuries · Data collection · Final report · Feb 29, 2020 · N228JS · No damage
  > The pilot being struck in the head by the propeller before flight, which resulted in a serious injury.
- [NTSB DCA20CA049](https://openairdocs.org/ntsb/DCA20CA049.md): Boeing 737 · New York, NY · Accident · No injuries · Data collection · Final report · Jan 8, 2020 · N929NN · Substantial damage
  > failure of the deicing truck driver to maintain appropriate clearance from the airplane.
- [NTSB CEN20CA047](https://openairdocs.org/ntsb/CEN20CA047.md): Cessna 182 · Robstown, TX · Accident · No injuries · Data collection · Final report · Dec 30, 2019 · N3473U · Substantial damage
  > The pilot's failure to set the friction lock on the throttle before hand propping the engine, which allowed the airplane to move forward and impact a credit card machine. Contributing to the accident was the malfunction of the parking brake for reasons that…
- [NTSB WPR20FA051](https://openairdocs.org/ntsb/WPR20FA051.md): Cirrus SF50 · Santa Monica, CA · Accident · No injuries · Class 3 · Field · Final report · Dec 27, 2019 · N52CV · Substantial damage
  > The improper design of the audio interface system, which caused an electrical short circuit that led to a ground fire.
- [NTSB GAA20WA098](https://openairdocs.org/ntsb/GAA20WA098.md): Cessna 172 · Los Andes/San Raphael, Chile · Accident · 1 fatal · Foreign investigation · Nov 17, 2019 · CC-AMQ · No damage
  > The government of Chile has notified the NTSB of an accident involving a CESSNA 172 airplane that occurred on November 17, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Chile's investigation under the provisions of…
- [NTSB GAA20CA072](https://openairdocs.org/ntsb/GAA20CA072.md): Cessna U206 · Mexico, MO · Accident · No injuries · Data collection · Final report · Nov 10, 2019 · N29173 · Substantial damage
  > The pilot's failure to properly set the parking brake before exiting an operating airplane, which resulted in a runaway airplane and subsequent impact with trees.
- [NTSB CEN19LA223](https://openairdocs.org/ntsb/CEN19LA223.md): Cessna 177 · Elkhart, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 14, 2019 · N29516 · Substantial damage
  > An inadvertent engine start of the airplane and subsequent takeoff without the pilot on-board for reasons that could not be determined based on available evidence.
- [NTSB GAA19CA366](https://openairdocs.org/ntsb/GAA19CA366.md): Taylorcraft BC12 · Yerington, NV · Accident · No injuries · Data collection · Final report · Jun 21, 2019 · N49368 · Substantial damage
  > The pilot's failure to properly secure the airplane before hand propping it, which resulted in the unmanned airplane moving and colliding with a fence.
- [NTSB GAA19CA209](https://openairdocs.org/ntsb/GAA19CA209.md): Bell 206 · Big Pine, FL · Accident · No injuries · Data collection · Final report · Apr 12, 2019 · N173MS · Substantial damage
  > The pilot's failure to maintain helicopter control while it was being reloaded with the rotors turning in gusting wind conditions, which resulted in a rotor strike with ground equipment.
- [NTSB GAA19CA176](https://openairdocs.org/ntsb/GAA19CA176.md): Piper PA28 · Savannah, GA · Accident · No injuries · Data collection · Final report · Mar 20, 2019 · N2667Q · Substantial damage
  > The pilot's failure to conduct the engine starting procedures in accordance with the Pilot’s Operating Handbook, which resulted in an engine fire.
- [NTSB CEN19LA092](https://openairdocs.org/ntsb/CEN19LA092.md): Bell 407 · Union Center, SD · Accident · Minor injuries · Limited investigation · Final report · Mar 3, 2019 · N450AM · Substantial damage
  > The ambulance driver’s failure to see the helicopter’s rotating main rotor blades in dark night conditions, which resulted in the ambulance’s inadvertent collision with the helicopter. Contributing to the accident was the ambulance driver's failure to follow…
- [NTSB GAA19CA136](https://openairdocs.org/ntsb/GAA19CA136.md): Cessna 182 · Arlington, WA · Accident · No injuries · Data collection · Final report · Feb 10, 2019 · N9101X · Substantial damage
  > The pilot's distraction during the engine warm-up, which resulted in the airplane's collision with a hangar. Contributing to the accident was the pilot's failure to set the brakes.
- [NTSB GAA19CA103](https://openairdocs.org/ntsb/GAA19CA103.md): Robinson R44 · Strykersville, NY · Accident · No injuries · Data collection · Final report · Dec 18, 2018 · N7535S · Substantial damage
  > The structural failure of the home-built landing platform during landing, which resulted in the helicopter rolling over.
- [NTSB GAA19CA091](https://openairdocs.org/ntsb/GAA19CA091.md): Zlin Z143 · Chester, CT · Accident · No injuries · Data collection · Final report · Dec 10, 2018 · N143GW · Substantial damage
  > The pilot's loss of airplane control during the engine start.
- [NTSB WPR19TA031](https://openairdocs.org/ntsb/WPR19TA031.md): Piper PA28 · Chandler, AZ · Accident · No injuries · Class 3 · Final report · Nov 5, 2018 · N9299B · 2 aircraft · Substantial damage
  > The student pilot’s failure to maintain a safe distance from the other airplane while taxiing, resulting in a ground collision.
- [NTSB ERA18LA269](https://openairdocs.org/ntsb/ERA18LA269.md): Robinson R44 · Westminster, MD · Accident · No injuries · Limited investigation · Final report · Sep 30, 2018 · N440SH · Substantial damage
  > The pilot's attempt to move the helicopter from a sloped surface after an overspeed event, which resulted in a loss of helicopter control and impact with a car. The overspeed event resulted from misrouted and damaged wiring in the magneto, which subsequently…
- [NTSB GAA18CA545](https://openairdocs.org/ntsb/GAA18CA545.md): Cirrus SR22 · Mason City, IA · Accident · Minor injuries · Data collection · Final report · Sep 8, 2018 · N669HT · Substantial damage
  > The pilot’s improper hand propping procedure, which resulted in a runaway airplane and subsequent impact with a hangar.
- [NTSB GAA18CA534](https://openairdocs.org/ntsb/GAA18CA534.md): Robinson R44 · Girdwood, AK · Accident · No injuries · Data collection · Final report · Aug 30, 2018 · N99645 · Substantial damage
  > The fisherman's fishing rod striking the helicopter’s rotating main rotor disk during loading.
- [NTSB ERA18LA199](https://openairdocs.org/ntsb/ERA18LA199.md): Cessna 182 · Cleveland, TN · Accident · 1 fatal · Limited investigation · Final report · Jul 26, 2018 · N1311S · No damage
  > The undetected wear of the ignition switch and key, which allowed removal of the key from an intermediate position and subsequently led to an unintended engine start-up. Contributing to the undetected wear of the 42-year-old ignition switch was the lack of…
- [NTSB CEN18LA245](https://openairdocs.org/ntsb/CEN18LA245.md): Kubicek BB30 · Ashland, OH · Accident · 1 fatal · Limited investigation · Final report · Jun 30, 2018 · N717FN · Minor damage
  > The pilot's failure to ensure that he was secure in the balloon's basket after landing, which resulted in him falling and striking his head on the burners when the wind caught the envelope and tipped the basket over. Contributing to the accident was the…
- [NTSB DCA18WA229](https://openairdocs.org/ntsb/DCA18WA229.md): Boeing 737 · Koln, Germany · Incident · No injuries · Foreign investigation · Jun 26, 2018 · D-ABKM · Minor damage
  > The government of Germany has notified the NTSB of an accident involving a BOEING 737 airplane that occurred on June 26, 2018. The NTSB has appointed a U.S. Accredited Representative to assist the government of Germany's investigation under the provisions of…
- [NTSB CEN18CA294](https://openairdocs.org/ntsb/CEN18CA294.md): Robinson R22 · Sterling City, TX · Accident · No injuries · Data collection · Final report · Jun 17, 2018 · N410MM · Substantial damage
  > The pilot’s improper decision to exit the helicopter without shutting down the engine, which allowed the collective/throttle to increase and resulted in a loss of control of the unattended helicopter.
- [NTSB WPR18LA170](https://openairdocs.org/ntsb/WPR18LA170.md): Schweizer 269C · Las Vegas, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 13, 2018 · N557DC · Substantial damage
  > The pilot’s failure to take the appropriate corrective action for ground resonance, which resulted in a loss of helicopter control.
- [NTSB GAA18CA295](https://openairdocs.org/ntsb/GAA18CA295.md): Luscombe 8 · Batavia, OH · Accident · Minor injuries · Data collection · Final report · May 24, 2018 · N77922 · Substantial damage
  > The student pilot’s use of an improper engine hand-propping procedure, which resulted in the airplane’s unexpected movement.
- [NTSB GAA18CA289](https://openairdocs.org/ntsb/GAA18CA289.md): Aerospatiale AS350 B2 Ecureuil · Yakutat, AK · Accident · No injuries · Data collection · Final report · May 18, 2018 · N288CH · Substantial damage
  > The helicopter’s movement during startup in gusting wind conditions, which resulted in the main rotor striking the tailboom.
- [NTSB DCA18CA165](https://openairdocs.org/ntsb/DCA18CA165.md): Bombardier CL600 2D24 · Queens, NY · Accident · No injuries · Data collection · Final report · May 1, 2018 · N606LR · 2 aircraft · Substantial damage
  > the failure of the captain of Delta 212 to ensure adequate clearance while taxiing behind Endeavor 3413.
- [NTSB ANC18LA020](https://openairdocs.org/ntsb/ANC18LA020.md): Eurocopter France SA330J Puma · Pacific Ocean, Japan · Accident · No injuries · Limited investigation · Final report · Jan 26, 2018 · N339EV · Substantial damage
  > The worn rear bearing of the freewheel unit. Contributing to the accident was the delay in analyzing an oil sample, which would have detected the increase in metal contaminants from the worn bearing.
- [NTSB DCA18WA075](https://openairdocs.org/ntsb/DCA18WA075.md): Boeing 737 · Toronto, Canada · Accident · No injuries · Foreign investigation · Jan 5, 2018 · C-FDMB · Substantial damage
  > The Transportation Safety Board (TSB) of Canada has notified the NTSB of an accident involving a Boeing 737, which occurred on January 5, 2018. The NTSB has appointed a U.S Accredited Representative to assist under the provisions of ICAO Annex 13, as the…
- [NTSB ERA18LA053](https://openairdocs.org/ntsb/ERA18LA053.md): Sikorsky S76 · Islamorada, FL · Accident · No injuries · Class 3 · Limited · Final report · Dec 15, 2017 · N911FK · Substantial damage
  > The pilot's activation of the rotor brake while the No. 2 engine was still set to govern the power turbine speed, which resulted in continuous power being applied to the rotor while the rotor brake was engaged and led to excessive friction, heat, and a…
- [NTSB DCA18CA042](https://openairdocs.org/ntsb/DCA18CA042.md): Mcdonnell Douglas MD 88 · Detroit, MI · Accident · No injuries · Data collection · Final report · Dec 12, 2017 · N924DL · Substantial damage
  > failure of the flight crew to confirm the left engine throttle lever was at idle during engine start.
- [NTSB CEN18WA029](https://openairdocs.org/ntsb/CEN18WA029.md): Robinson R44 · Namur, Belgium · Accident · Minor injuries · Foreign investigation · Oct 8, 2017 · OO-FLY · Substantial damage
- [NTSB GAA18CA016](https://openairdocs.org/ntsb/GAA18CA016.md): Ultramagic T210 · Albuquerque, NM · Accident · Serious injuries · Data collection · Final report · Oct 6, 2017 · N123UT · 2 aircraft · Substantial damage
  > The pilot's failure to maintain adequate clearance from a balloon on the ground during landing.
- [NTSB GAA17CA560](https://openairdocs.org/ntsb/GAA17CA560.md): Piper J5A · Geneseo, NY · Accident · Minor injuries · Data collection · Final report · Sep 27, 2017 · N38633 · Substantial damage
  > The pilot's failure to properly secure the airplane before a hand propeller start, which resulted in the airplane moving forward and colliding with maintenance equipment.
- [NTSB CEN17LA350](https://openairdocs.org/ntsb/CEN17LA350.md): Embraer EMB 120ER · Greeley, CO · Accident · No injuries · Limited investigation · Final report · Sep 13, 2017 · N121CZ · Substantial damage
  > The bus driver's failure to maintain clearance from the standing airplane during dark night conditions. Contributing to the accident was the airport's lack of an escort for the bus.
- [NTSB GAA17CA520](https://openairdocs.org/ntsb/GAA17CA520.md): Cessna 680 · Wilmington, DE · Accident · Serious injuries · Data collection · Final report · Sep 3, 2017 · N378QS · No damage
  > The passenger’s inadvertent slip on the airplane's air stairs during deplaning, which resulted in a broken ankle.
- [NTSB ERA17CA295](https://openairdocs.org/ntsb/ERA17CA295.md): Piper PA 28-161 · Palatka, FL · Accident · No injuries · Data collection · Final report · Aug 25, 2017 · N84175 · Substantial damage
  > The student pilot's overpriming of the engine and the flight instructor's delayed remedial action, which resulted in an engine fire.
- [NTSB CEN17WA308](https://openairdocs.org/ntsb/CEN17WA308.md): American Champion 8GCBC · Dunaujvaros, Hungary · Accident · No injuries · Foreign investigation · Aug 4, 2017 · HA-KYL · Destroyed
  > The government of Hungary has notified the National Transportation Safety Board (NTSB) of an accident involving an American Champion 8GCBC airplane that occurred on August 04, 2017. The NTSB has appointed a U.S. Accredited Representative to assist the…
- [NTSB ERA17LA243](https://openairdocs.org/ntsb/ERA17LA243.md): Balloon Works Firefly 8B 15 · Murfreesboro, TN · Accident · Serious injuries · Limited investigation · Final report · Jul 15, 2017 · N3282P · No damage
  > The passenger's failure to let go of the balloon's gondola when the balloon began to ascend. Contributing to the accident was the pilot's failure to maintain control of the balloon after landing, which resulted in an inadvertent takeoff.
- [NTSB GAA17CA398](https://openairdocs.org/ntsb/GAA17CA398.md): Robinson Helicopter R44 II · Pocahontas, IL · Accident · No injuries · Data collection · Final report · Jul 7, 2017 · N62FA · Substantial damage
  > The helicopter pilot’s miscommunication with the ground crewmember during reloading operations, which resulted in a takeoff with the filler hose attached to the helicopter and subsequent impact with a truck.
- [NTSB CEN17LA264](https://openairdocs.org/ntsb/CEN17LA264.md): Bell 47D1 · Big Lake, MN · Accident · No injuries · Limited investigation · Final report · Jul 6, 2017 · N153B · Substantial damage
  > The failure of the metal core assembly within a wooden main rotor blade due to undetected corrosion and fatigue, which caused the wooden blade to separate from the rotor mast.
- [NTSB CEN17LA223](https://openairdocs.org/ntsb/CEN17LA223.md): Head Balloons AX7 77B · Chatsworth, IL · Accident · Serious injuries · Limited investigation · Final report · Jun 8, 2017 · N30721 · Minor damage
  > The balloon’s encounter with unexpected wind gusts during inflation, which resulted in the balloon becoming prematurely airborne and subsequently the pilot being ejected from the basket and one passenger receiving serious injuries while attempting to egress…
- [NTSB GAA17CA344](https://openairdocs.org/ntsb/GAA17CA344.md): Eurocopter EC130 · Peach Springs, AZ · Accident · No injuries · Data collection · Final report · May 25, 2017 · N153GC · Substantial damage
  > The ground crewman’s failure to hold onto the passenger door while the main rotor was still rotating, which resulted in the door separating from the helicopter and damaging the main rotor.
- [NTSB GAA17CA252](https://openairdocs.org/ntsb/GAA17CA252.md): Maule MX7 · Floydada, TX · Accident · No injuries · Data collection · Final report · Apr 30, 2017 · N3035M · Substantial damage
  > The pilot's decision to fly into and land at an area of known widespread high gusting wind, which resulted in a nose-over.
- [NTSB CEN17CA116](https://openairdocs.org/ntsb/CEN17CA116.md): Cessna 162 · Conway, AR · Accident · Serious injuries · Data collection · Final report · Mar 4, 2017 · N3028G · No damage
  > The pilot's failure to shut down the engine before exiting the airplane and his failure to focus his attention on the task at hand, which led to his walking into a rotating propeller.

Next page: https://openairdocs.org/ntsb-phases/150/cases.md?page=4

## 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."mKey" IN (SELECT case_mkey FROM case_phases WHERE main = 150)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/150/cases?page=3

---
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