# NTSB investigations: Enroute

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 217 of 718 · 35,885 cases

## Cases, newest first

- [NTSB LAX96LA019](https://openairdocs.org/ntsb/LAX96LA019.md): Eaa Chapter 163 Breezy RLU-1A · Henderson, NV · Accident · Serious injuries · Limited investigation · Final report · Oct 21, 1995 · N3184 · Substantial damage
  > the pilot's failure to maintain a proper cruise altitude and his inadequate in-flight planning. Contributing factors were encountering rising terrain and a downdraft.
- [NTSB CHI96LA015](https://openairdocs.org/ntsb/CHI96LA015.md): Piper PA-28-140 · Ocie, MO · Accident · Serious injuries · Limited investigation · Final report · Oct 21, 1995 · N6932W · Substantial damage
  > failure of the number three exhaust valve.
- [NTSB NYC96FA012](https://openairdocs.org/ntsb/NYC96FA012.md): Piper PA-31-350 · Atlantic Ocean (Atlantic Ocean) · Accident · 1 fatal · Field investigation · Final report · Oct 19, 1995 · N711EX · Substantial damage
  > a total loss of left engine power as a result of an in-flight separation of the #2 cylinder. The cylinder separated due to high stress fatigue cracking of the cylinder hold down studs and the #3 main bearing thru-studs. Factors in this accident were: improper…
- [NTSB LAX96LA017](https://openairdocs.org/ntsb/LAX96LA017.md): Cessna 152 · Mobile, AZ · Accident · No injuries · Limited investigation · Final report · Oct 19, 1995 · N5321P · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB FTW96LA019](https://openairdocs.org/ntsb/FTW96LA019.md): Grumman American AA-5B · Waller, TX · Accident · No injuries · Limited investigation · Final report · Oct 19, 1995 · N888R · Substantial damage
  > a loss of power for undetermined reasons, and the pilot misjudging distance and airspeed resulting in his failure to attain the proper touchdown point.
- [NTSB CHI96LA014](https://openairdocs.org/ntsb/CHI96LA014.md): Piper PA-31 · Anderson, IN · Accident · No injuries · Limited investigation · Final report · Oct 19, 1995 · N693MA · Substantial damage
  > inadequate maintenance in that an engine oil line was not properly tightened after routine maintenance. A factor was the disconnected oil line.
- [NTSB CHI96LA013](https://openairdocs.org/ntsb/CHI96LA013.md): Cessna 150 · Peosta, IA · Accident · No injuries · Limited investigation · Final report · Oct 19, 1995 · N17382 · Substantial damage
  > the pilot's inadequate aircraft preflight inspection and failure to refuel the airplane prior to fuel exhaustion.
- [NTSB ANC96LA006](https://openairdocs.org/ntsb/ANC96LA006.md): Beech B24R · Ninilchik, AK · Accident · Minor injuries · Limited investigation · Final report · Oct 19, 1995 · N9329S · Substantial damage
  > The pilot's improper inflight planning/decision and inadequate compensation for the wind conditions. Turbulence and downdrafts were related factors.
- [NTSB ANC96LA005](https://openairdocs.org/ntsb/ANC96LA005.md): Piper PA-18 · Red Devil, AK · Accident · Minor injuries · Limited investigation · Final report · Oct 18, 1995 · N6550Z · Substantial damage
  > Loss of engine power for an undetermined reason. The lack of suitable terrain for a forced landing was a related factor.
- [NTSB MIA96LA009](https://openairdocs.org/ntsb/MIA96LA009.md): SIAI-Marchetti SF.260 · Atlantic Ocean (Atlantic Ocean) · Accident · Minor injuries · Limited investigation · Final report · Oct 17, 1995 · N913WJ · Destroyed
  > loss of engine power for undetermined reason(s), which result in a ditching at sea.
- [NTSB LAX96LA013](https://openairdocs.org/ntsb/LAX96LA013.md): Boeing 747-422 · Pacific Ocean (Pacific Ocean) · Accident · Serious injuries · Limited investigation · Final report · Oct 17, 1995 · N191UA · No damage
  > an inadvertent encounter with unreported and unforecasted severe turbulence. A factor in the accident was the passengers' non-use of seat belts during cruise flight.
- [NTSB NYC96LA013](https://openairdocs.org/ntsb/NYC96LA013.md): Piper PA-32 · Honsdale, PA · Accident · No injuries · Limited investigation · Final report · Oct 16, 1995 · N39964 · Substantial damage
  > the pilot's improper evaluation of the weather briefing, and his decision to fly into known forecasted moderate to severe icing conditions. Factors in the accident were the adverse weather conditions encountered during the flight and landing.
- [NTSB LAX96LA011](https://openairdocs.org/ntsb/LAX96LA011.md): Cessna 150M · Brea, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 16, 1995 · N704QJ · Substantial damage
  > fuel exhaustion due to the pilot's improper leaning procedures and his failure to use the performance charts in the pilot operating handbook to determine fuel consumption rates for the selected cruise power setting.
- [NTSB MIA96LA007](https://openairdocs.org/ntsb/MIA96LA007.md): Forney ERCOUPE-2 · Cartersville, GA · Accident · No injuries · Limited investigation · Final report · Oct 15, 1995 · N3027G · Substantial damage
  > The pilot-in-command's decision to continue flight with the inoperative fuel transfer pump which resulted in loss of engine power due to fuel starvation. The inoperative fuel transfer pump and the unsuitable terrain encountered during the forced landing were…
- [NTSB CHI96LA011](https://openairdocs.org/ntsb/CHI96LA011.md): McDonnell Douglas DC-9-31 · Cedar Rapids, IA · Accident · No injuries · Limited investigation · Final report · Oct 14, 1995 · N945AX · Substantial damage
  > inadequate installation of a thrust reverser, driver linkage arm pivot bolt and nut, which resulted in the nut and bolt becoming disconnected. A factor relating to the accident was: the manufacturer's unclear information regarding the type and number of…
- [NTSB BFO96IA012](https://openairdocs.org/ntsb/BFO96IA012.md): Piper PA-23 · Beckley, WV · Incident · No injuries · Incident investigation · Final report · Oct 14, 1995 · N65SC · Minor damage
  > an in-flight fire (behind the right side of the instrument panel), which occurred for undetermined reason(s).
- [NTSB NYC96LA007](https://openairdocs.org/ntsb/NYC96LA007.md): Teague Pitts S-1S · Erwinna, PA · Accident · No injuries · Limited investigation · Final report · Oct 13, 1995 · N792 · Substantial damage
  > the pilot's misjudged flare and improper bounced landing recovery. Factors were the pilot's lack of recent experience and a false oil pressure gauge indication.
- [NTSB MIA96LA008](https://openairdocs.org/ntsb/MIA96LA008.md): Piper PA-28R-180 · Covington, GA · Accident · No injuries · Limited investigation · Final report · Oct 13, 1995 · N3250R · Substantial damage
  > the pilot's failure to divert to an alternate airport after recognizing a low fuel state existed and his delay to declare an emergency with ATC. Contributing to the accident was the unsuitable terrain encountered during the forced landing.
- [NTSB ATL96LA005](https://openairdocs.org/ntsb/ATL96LA005.md): Mooney M20K · Dalton, GA · Accident · No injuries · Limited investigation · Final report · Oct 13, 1995 · N3983H · Substantial damage
  > Oil starvation for an unknown reason, which resulted in progressive connecting rod failure and subsequent loss of engine power. Factors relating to the accident were: the unfavoable weather and light conditions (low ceiling and fog at dusk), which hampered…
- [NTSB ATL96LA004](https://openairdocs.org/ntsb/ATL96LA004.md): Lopez Lancair 360 · Atlanta, GA · Accident · 1 fatal · Limited investigation · Final report · Oct 13, 1995 · N102JL · Destroyed
  > the noninstrument-rated pilot's intentional VFR flight into instrument meteorological conditions which led to a loss of control.
- [NTSB CHI96LA007](https://openairdocs.org/ntsb/CHI96LA007.md): Roisum Team MINI-MAX · Neenah, WI · Accident · Minor injuries · Limited investigation · Final report · Oct 11, 1995 · N42BX · Substantial damage
  > Fuel starvation due to fuel filter blockage. Factors associated with the accident were the manufacturers design of the fuel filter and the builder/pilots decision to use an automotive type fuel filter.
- [NTSB CHI96LA006](https://openairdocs.org/ntsb/CHI96LA006.md): Cessna 172F · Danbury, WI · Accident · No injuries · Limited investigation · Final report · Oct 11, 1995 · N8740U · Substantial damage
  > the partial failure of the left magneto, the road sign, and the road embankment. A factor relating to this accident is the brush which obscured the road sign.
- [NTSB FTW96LA010](https://openairdocs.org/ntsb/FTW96LA010.md): Cessna 172N · Crockett, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 8, 1995 · N738DF · Substantial damage
  > failure of both magnetos to operate properly due to inadequate maintenance by other maintenance personnel. A factor was the lack of suitable terrain available for the forced landing.
- [NTSB NYC96FA004](https://openairdocs.org/ntsb/NYC96FA004.md): Cessna P206A · Fishkill, NY · Accident · 1 fatal · Field investigation · Final report · Oct 7, 1995 · N4704F · Destroyed
  > The pilot's VFR flight into instrument meteorological conditions. Contributing factors were the fog and dusk light conditions.
- [NTSB FTW96FA009](https://openairdocs.org/ntsb/FTW96FA009.md): Rupe RV-4 · Longmont, CO · Accident · 1 fatal · Field investigation · Final report · Oct 7, 1995 · N61TR · Destroyed
  > the installation of an unapproved metal propeller which led to a fatigue failure of a blade and loss of aircraft control.
- [NTSB SEA96LA003](https://openairdocs.org/ntsb/SEA96LA003.md): Piper PA-28-235 · Mulino, OR · Accident · Serious injuries · Limited investigation · Final report · Oct 6, 1995 · N8845W · Substantial damage
  > the failure of the pilots to use carburetor heat during a reduced power descent. A factor was the carburetor icing conditions.
- [NTSB LAX96LA007](https://openairdocs.org/ntsb/LAX96LA007.md): Schlitter Rans S-9 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Oct 6, 1995 · N5052E · Substantial damage
  > seizure of the #2 cylinder for undetermined reasons. The lack of suitable terrain for the forced landing was a factor.
- [NTSB MIA96LA002](https://openairdocs.org/ntsb/MIA96LA002.md): Cessna T210M · Apopka, FL · Accident · No injuries · Limited investigation · Final report · Oct 4, 1995 · N6508B · Substantial damage
  > The pilot's failure to perform fuel consumption calculations for the flight which resulted in a loss of engine power due to fuel exhaustion.
- [NTSB LAX96LA002](https://openairdocs.org/ntsb/LAX96LA002.md): Cessna 150M · Fillmore, CA · Accident · No injuries · Limited investigation · Final report · Oct 2, 1995 · N63522 · Substantial damage
  > the CFI's failure to adequately supervise the flight; and the student pilot's poor preflight planning/preparation and fuel consumption calculations.
- [NTSB LAX96LA001](https://openairdocs.org/ntsb/LAX96LA001.md): Mooney M20E · Long Beach, CA · Accident · 1 fatal · Limited investigation · Final report · Oct 2, 1995 · N79820 · Destroyed
  > a loss of engine power for undeternined reasons.
- [NTSB BFO96LA001](https://openairdocs.org/ntsb/BFO96LA001.md): Rudy Kitfox 1 · Charlottesville, VA · Accident · No injuries · Limited investigation · Final report · Oct 1, 1995 · N226WR · Destroyed
  > the pilot's improper fuel management which resulted in fuel exhaustion. A related factor was the pilot's inadequate fuel consumption calculations.
- [NTSB NYC95LA231](https://openairdocs.org/ntsb/NYC95LA231.md): Waco UPF-7 · Staten Island, NY · Accident · No injuries · Limited investigation · Final report · Sep 29, 1995 · N167K · Substantial damage
  > Failure of the propeller blade due to fatigue, which resulted in severe vibration, subsequent separation of the engine, and a forced landing.
- [NTSB MIA95LA241](https://openairdocs.org/ntsb/MIA95LA241.md): Beech D50E · Okeechobee, FL · Accident · Minor injuries · Limited investigation · Final report · Sep 29, 1995 · N9351Y · Substantial damage
  > The pilot's decision to conduct a feathering check of the right propeller at an altitude inadequate for a safe engine restart or refeathering of the propeller.
- [NTSB MIA95LA240](https://openairdocs.org/ntsb/MIA95LA240.md): Menear Pitts S-1S · Boynton Beach, FL · Accident · Minor injuries · Limited investigation · Final report · Sep 29, 1995 · N21WM · Substantial damage
  > The pilot's improper decision to make a go-around and failure to maintain airspeed (vso) resulting in an inadvertent stall. The total loss of engine power due to fuel exhaustion was a factor.
- [NTSB ATL95LA176](https://openairdocs.org/ntsb/ATL95LA176.md): Cessna 182R · Tuscaloosa, AL · Accident · No injuries · Limited investigation · Final report · Sep 29, 1995 · N9119C · Substantial damage
  > Engine oil starvation for undetermined reasons, which resulted in a connecting rod cap failure.
- [NTSB NYC95LA228](https://openairdocs.org/ntsb/NYC95LA228.md): Cessna 150M · Rutland, VT · Accident · No injuries · Limited investigation · Final report · Sep 28, 1995 · N9289U · Substantial damage
  > the loss of engine power for an undetermined reason.
- [NTSB CHI95LA334](https://openairdocs.org/ntsb/CHI95LA334.md): Ercoupe 415-D · Belleville, IL · Accident · Minor injuries · Limited investigation · Final report · Sep 28, 1995 · N89331 · Substantial damage
  > the rupture of the oil pressure line which led to oil system exhaustion, the stuck intake valves, and the powerlines.
- [NTSB SEA95LA225](https://openairdocs.org/ntsb/SEA95LA225.md): Cessna TR182 · Richfield, ID · Accident · No injuries · Limited investigation · Final report · Sep 26, 1995 · N736LT · Substantial damage
  > The instructor's failure to use carburetor heat during a simulated engine-out descent. Carburetor icing conditions was a factor.
- [NTSB MIA95LA237](https://openairdocs.org/ntsb/MIA95LA237.md): Aerotek Pitts - S2S · Clarksville, VA · Accident · 1 fatal · Limited investigation · Final report · Sep 25, 1995 · N260HP · Destroyed
  > continued flight by the pilot into instrument meteorological conditions (IMC), which resulted in spatial disorientation and his inability to control the airplane. The weather condition and the lack of instruments in the airplane were related factors.
- [NTSB FTW95FA402](https://openairdocs.org/ntsb/FTW95FA402.md): Piper PA-24B-260 · Westcliffe, CO · Accident · 5 fatal · Field investigation · Final report · Sep 25, 1995 · N9121P · Destroyed
  > VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain sufficient altitude or clearance from mountainous terrain. Factors relating to the accident were: the light conditions at dusk, the adverse weather…
- [NTSB FTW95FA401](https://openairdocs.org/ntsb/FTW95FA401.md): Cessna T210L · Groom, TX · Accident · 1 fatal · Field investigation · Final report · Sep 25, 1995 · N2599S · Destroyed
  > Loss of control for unknown reason(s).
- [NTSB CHI95LA333](https://openairdocs.org/ntsb/CHI95LA333.md): Fairchild FA-24 · Blountsville, IN · Accident · Minor injuries · Limited investigation · Final report · Sep 25, 1995 · N22036 · Destroyed
  > partial loss of engine power for an undetermined reason, and the pilot's improper in-flight planing/decision. Factors relating to the accident were: the pilot's misuse of flaps, and his encounter with high obstruction during the forced landing.
- [NTSB CHI95LA332](https://openairdocs.org/ntsb/CHI95LA332.md): Piper PA-24-250 · Ludington, MI · Accident · Serious injuries · Limited investigation · Final report · Sep 25, 1995 · N6725P · Substantial damage
  > fuel exhaustion resulting from the pilot's inaccurate fuel calculations and the failure to refuel the airplane prior to takeoff. An additional cause was the stall/mush during the forced landing.
- [NTSB NYC95LA225](https://openairdocs.org/ntsb/NYC95LA225.md): Snyded Pitts S1E · Somers, NY · Accident · 2 fatal · Limited investigation · Final report · Sep 24, 1995 · N27920 · Substantial damage
  > The pilot's inadequate visual lookout, which resulted his failure to see-and-avoid the power line.
- [NTSB MIA95LA234](https://openairdocs.org/ntsb/MIA95LA234.md): Cessna 150 · Sarasota, FL · Accident · No injuries · Limited investigation · Final report · Sep 24, 1995 · N6080T · Substantial damage
  > The failure of the pilot to perform fuel consumption calculations resulting in a loss of power due to fuel exhaustion.
- [NTSB FTW95LA405](https://openairdocs.org/ntsb/FTW95LA405.md): Let Blanik L-13 · Como, CO · Accident · Minor injuries · Limited investigation · Final report · Sep 24, 1995 · N38924 · Substantial damage
  > The pilot allowing the glider to develop an excessive descent rate. A factor was the premature and automatic disengagement of the winch-tow system.
- [NTSB ATL95FA173](https://openairdocs.org/ntsb/ATL95FA173.md): Cessna 310P · Lexington, MS · Accident · 2 fatal · Field investigation · Final report · Sep 24, 1995 · N5926M · Destroyed
  > the non-instrument rated pilot's intentional VFR flight into instrument meteorological conditions and his failure to maintain control of the aircraft. The weather was a factor.
- [NTSB CHI95LA330](https://openairdocs.org/ntsb/CHI95LA330.md): Hard Maxair Drifter · Mexico, MO · Accident · No injuries · Limited investigation · Final report · Sep 23, 1995 · N4255Q · Substantial damage
  > fuel exhaustion as a result of excessive fuel flow, and failure of the pilot not properly monitoring fuel consumption. Rough/uneven terrain in the emergency landing area was a related factor.
- [NTSB MIA95TA230](https://openairdocs.org/ntsb/MIA95TA230.md): Bell 206B · Culebra, PR · Accident · Serious injuries · Final report · Sep 22, 1995 · N2280N · Destroyed
  > the failure of company maintenance personnel to insure the tail rotor gearbox attach bolts were properly torqued.
- [NTSB ATL95LA172](https://openairdocs.org/ntsb/ATL95LA172.md): Grumman G-164A · Lynchburg, SC · Accident · No injuries · Limited investigation · Final report · Sep 22, 1995 · N9700 · Substantial damage
  > The failure of the magneto mount pad, which resulted in a malfunction of the magneto timing and partial loss of engine power. A factor relating to the accident was: high vegetation in the emergency landing area.

Next page: https://openairdocs.org/ntsb-phases/400/cases.md?page=218

## 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 = 400)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/400/cases?page=217

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.