# NTSB investigations: Approach

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 118 of 420 · 20,996 cases

## Cases, newest first

- [NTSB LAX97LA211](https://openairdocs.org/ntsb/LAX97LA211.md): Maule M-4-220C · Gualala, CA · Accident · Serious injuries · Limited investigation · Final report · Jun 14, 1997 · N40654 · Destroyed
  > continued VFR flight by the pilot into instrument meteorological conditions (IMC), and his failure to maintain sufficient altitude/clearance from tall trees. The weather conditions (low ceiling and fog) were related factors.
- [NTSB NYC97LA119](https://openairdocs.org/ntsb/NYC97LA119.md): Enstrom F-280C · Sharon, VT · Accident · Minor injuries · Limited investigation · Final report · Jun 13, 1997 · N5700J · Substantial damage
  > The pilot's improper decision to descend and fly at 100 feet over a river and his failure to maintain adequate obstacle clearance, which resulted in the in-flight collision with wires.
- [NTSB FTW97LA224](https://openairdocs.org/ntsb/FTW97LA224.md): Aero Commander 200D · Little Rock, AR · Accident · No injuries · Limited investigation · Final report · Jun 13, 1997 · N898LF · Substantial damage
  > a loss of engine power due to fuel starvation from a partially blocked fuel line which was the result of improper maintenance by unknown person(s). A factor was the lack of suitable terrain for landing.
- [NTSB SEA97FA130](https://openairdocs.org/ntsb/SEA97FA130.md): Lockheed P-38L · Tillamook, OR · Accident · 1 fatal · Field investigation · Final report · Jun 7, 1997 · N7973 · Destroyed
  > failure of the pilot to maintain minimum control speed (VMC), after loss of power in one engine, which resulted in a loss of aircraft control and collision with terrain. Related factors were: the pilot's improper fuel management and failure to change the fuel…
- [NTSB IAD97LA084](https://openairdocs.org/ntsb/IAD97LA084.md): Cessna 172M · Put-In-Bay, OH · Accident · Minor injuries · Limited investigation · Final report · Jun 7, 1997 · N5267R · Destroyed
  > Pilot in command failed to maintain control of the airplane. Factors to the accident where high wind conditions with a strong crosswind component and the pilot's inadvertent failure to raise the flaps during the go around.
- [NTSB ATL97LA082](https://openairdocs.org/ntsb/ATL97LA082.md): Beech V35 · Daytona Beach, FL · Accident · Serious injuries · Limited investigation · Final report · Jun 7, 1997 · N35MD · Substantial damage
  > The pilot's mismanagement of fuel, resulting in fuel exhaustion.
- [NTSB SEA97LA129](https://openairdocs.org/ntsb/SEA97LA129.md): Cessna 210D · Renton, WA · Accident · No injuries · Limited investigation · Final report · Jun 6, 1997 · N3908Y · Substantial damage
  > Landing gear hydraulic system power pack failure.
- [NTSB NYC97LA107](https://openairdocs.org/ntsb/NYC97LA107.md): Piper PA-28-181 · Walton, NY · Accident · Serious injuries · Limited investigation · Final report · Jun 6, 1997 · N38758 · Destroyed
  > The pilot's improper inflight decision to establish an approach without confirming the landing area, and his delayed go-around, which resulted in the inflight collision with trees.
- [NTSB NYC97LA105](https://openairdocs.org/ntsb/NYC97LA105.md): North American Navion · Fredericksburg, VA · Accident · Minor injuries · Limited investigation · Final report · Jun 5, 1997 · N91711 · Destroyed
  > The pilot's delayed go-around which resulted in the inflight collision with trees off the departure end of the runway.
- [NTSB NYC97FA103](https://openairdocs.org/ntsb/NYC97FA103.md): Cessna 210M · Elliston, VA · Accident · 3 fatal · Field investigation · Final report · Jun 3, 1997 · N9162M · Destroyed
  > failure of the PIC to maintain control of the airplane, due to spatial disorientation.
- [NTSB CHI97LA154](https://openairdocs.org/ntsb/CHI97LA154.md): Cessna 340A · Fort Wayne, IN · Accident · No injuries · Limited investigation · Final report · Jun 3, 1997 · N171DB · Substantial damage
  > the pilot did not comply with the decision height and his attention was diverted from his cockpit scan. The factors involved were the weather conditions were at landing minimums and a flight to his destination alternate was not performed.
- [NTSB MIA97FA175](https://openairdocs.org/ntsb/MIA97FA175.md): Grumman American AA-5B · Avon Park, FL · Accident · 2 fatal · Field investigation · Final report · Jun 2, 1997 · N28297 · Destroyed
  > the pilot's failure to maintain airspeed (Vso) during an approach in instrument flight conditions.
- [NTSB SEA97LA124](https://openairdocs.org/ntsb/SEA97LA124.md): Cessna 150H · Redmond, OR · Accident · No injuries · Limited investigation · Final report · Jun 1, 1997 · N50348 · Substantial damage
  > the pilot's improper decision to depart on a flight without first ensuring the aircraft held sufficient fuel to reach his destination, which resulted in fuel exhaustion. Factors were the high vegetation and rocks at the location of the forced landing.
- [NTSB MIA97LA177](https://openairdocs.org/ntsb/MIA97LA177.md): Cessna T-210-N · Hollywood, FL · Accident · No injuries · Limited investigation · Final report · Jun 1, 1997 · N7393C · Substantial damage
  > failure of the pilot to ensure the landing gear was locked down before landing, following an electrical system failure, resulting in the left main landing gear collapsing during landing rollout. The electrical malfunction and resultant discharged battery were…
- [NTSB IAD97FA079](https://openairdocs.org/ntsb/IAD97FA079.md): Piper PA-28-180 · Melville, NY · Accident · 4 fatal · Field investigation · Final report · Jun 1, 1997 · N6337J · Destroyed
  > The pilot's failure to maintain control of the airplane. Factors to this accident were night instrument meteorological conditions with low ceiling and fog.
- [NTSB FTW97LA209](https://openairdocs.org/ntsb/FTW97LA209.md): Giertz Vmax Probe · Lake Jackson, TX · Accident · 1 fatal · Limited investigation · Final report · Jun 1, 1997 · N1200M · Substantial damage
  > The pilot's failure to maintain aircraft control during an approach to landing. A related factor was the pilot's lack of experience in make and model of aircraft.
- [NTSB LAX97LA192](https://openairdocs.org/ntsb/LAX97LA192.md): Crosby GEE BEE Sportster · Watsonville, CA · Accident · Minor injuries · Limited investigation · Final report · May 23, 1997 · N11044 · Substantial damage
  > an unknown failure of the engine oil system, which resulted in loss of oil and a seized engine.
- [NTSB ANC97LA076](https://openairdocs.org/ntsb/ANC97LA076.md): Cessna 180F · Ketchikan, AK · Accident · Minor injuries · Limited investigation · Final report · May 21, 1997 · N2175Z · Substantial damage
  > the pilot's inadequate compensation for wind conditions. A factor relating to the accident was: the unfavorable wind condition with gusts and downdrafts.
- [NTSB LAX97LA186](https://openairdocs.org/ntsb/LAX97LA186.md): Cessna 150 · Groveland, CA · Accident · No injuries · Limited investigation · Final report · May 20, 1997 · N19315 · Destroyed
  > was fuel exhaustion. Contributing to the accident was the lack of preflight review by the student's flight instructor and training.
- [NTSB SEA97LA113](https://openairdocs.org/ntsb/SEA97LA113.md): Cessna 207 · Roche Harbor, WA · Accident · No injuries · Limited investigation · Final report · May 18, 1997 · N7405 · Substantial damage
  > The pilot's inadequate remedial action upon encountering a downdraft on final approach. The downdraft was a factor.
- [NTSB MIA97FA162](https://openairdocs.org/ntsb/MIA97FA162.md): Cessna R182 · N. Myrtle Beach, SC · Accident · 1 fatal · Field investigation · Final report · May 14, 1997 · N9080C · Destroyed
  > the pilot's failure to maintain airspeed during a go-around resulting in an inadvertent stall.
- [NTSB NYC97LA090](https://openairdocs.org/ntsb/NYC97LA090.md): Cessna 172P · Morristown, NJ · Accident · Serious injuries · Limited investigation · Final report · May 13, 1997 · N65983 · Substantial damage
  > The flight instructor's inadequate supervision which allowed the student to solo at night with less than one hour of night instruction with a known inoperative landing and taxi light. A Factor was the student pilot's spatial disorientation which resulted in…
- [NTSB SEA97LA108](https://openairdocs.org/ntsb/SEA97LA108.md): Piper PA-22-150 · The Dalles, OR · Accident · No injuries · Limited investigation · Final report · May 10, 1997 · N1707P · Substantial damage
  > The pilot-in-command misjudged his altitude and distance from the runway while landing.
- [NTSB SEA97FA106](https://openairdocs.org/ntsb/SEA97FA106.md): Piper PA-28R-200 · Tigard, OR · Accident · 2 fatal · Field investigation · Final report · May 10, 1997 · N55676 · Destroyed
  > The pilot's failure to properly manage the aircraft fuel supply, which led to fuel exhaustion of the right tank and subsequent fuel starvation/power loss of the engine during the final approach. Factors contributing to the accident were the lack of sufficient…
- [NTSB NYC97LA093](https://openairdocs.org/ntsb/NYC97LA093.md): Cessna 150H · New Castle, DE · Accident · No injuries · Limited investigation · Final report · May 10, 1997 · N23471 · Substantial damage
  > the pilot's failure to maintain directional control of the airplane. A contributing factor was the gusty wind conditions.
- [NTSB NYC97LA088](https://openairdocs.org/ntsb/NYC97LA088.md): North American B-25J · Midland, VA · Accident · No injuries · Limited investigation · Final report · May 10, 1997 · N9456Z · Substantial damage
  > The pilot's misjudgment of distance and altitude during the final approach. A factor in the accident was the exposed runway lip/edge.
- [NTSB ATL97FA072](https://openairdocs.org/ntsb/ATL97FA072.md): Bellanca 14-13 · Stockbridge, GA · Accident · 1 fatal · Field investigation · Final report · May 10, 1997 · N86734 · Substantial damage
  > the pilot's improper use of carburetor heat, which led to loss of engine power due to carburetor ice. Factors related to the accident were: carburetor icing (weather) conditions, and trees in the emergency landing area.
- [NTSB MIA97LA156](https://openairdocs.org/ntsb/MIA97LA156.md): Piper PA-28-180 · Wilgrove, NC · Accident · Serious injuries · Limited investigation · Final report · May 7, 1997 · N3976R · Substantial damage
  > the pilot's improper planning, which resulted in fuel exhaustion and a forced landing short of the intended destination airport.
- [NTSB FTW97LA175](https://openairdocs.org/ntsb/FTW97LA175.md): Cessna 172P · Austin, TX · Accident · No injuries · Limited investigation · Final report · May 4, 1997 · N53359 · Substantial damage
  > The pilot's failure to maintain aircraft control. A factor was the pilot's inadequate compensation for the wind conditions.
- [NTSB SEA97FA097](https://openairdocs.org/ntsb/SEA97FA097.md): Cessna T210M · Bullfrog, UT · Accident · 4 fatal · Field investigation · Final report · May 3, 1997 · N732QB · Destroyed
  > The pilot-in-command's failure to maintain adequate flying airspeed, for reason(s) unknown, resulting in a subsequent stall.
- [NTSB FTW97FA174](https://openairdocs.org/ntsb/FTW97FA174.md): Beech V35 · Lake George, CO · Accident · 2 fatal · Field investigation · Final report · May 3, 1997 · N831U · Destroyed
  > The pilot-in-command's failure to maintain control of the airplane. A factor was the terrain-induced turbulence.
- [NTSB CHI97LA120](https://openairdocs.org/ntsb/CHI97LA120.md): Maule M-5 · West Fargo, ND · Accident · No injuries · Limited investigation · Final report · May 3, 1997 · N290X · Substantial damage
  > the pilot's inadequate compensation for wind conditions, and his failure to attain a proper touchdown point. Factors relating to the accident were: the unfavorable wind conditions, and the terrain condition where the airplane touched down.
- [NTSB SEA97LA096](https://openairdocs.org/ntsb/SEA97LA096.md): Hendrix Talon XP · Redmond, OR · Accident · Minor injuries · Limited investigation · Final report · May 2, 1997 · N6291X · Substantial damage
  > incomplete installation (omission of the aft control stick and interlink tube) of the flight control system, resulting in failure of the combined (torque) elevator and aileron rod and a disconnection of the forward flight control stick from the ailerons and…
- [NTSB NYC97FA080](https://openairdocs.org/ntsb/NYC97FA080.md): Piper PA-60-601P · Waterford, VA · Accident · 2 fatal · Field investigation · Final report · Apr 28, 1997 · N885JC · Destroyed
  > failure of the pilot to follow the published instrument (IFR) approach procedure, by failing to maintain the minimum altitude for that segment of the approach.
- [NTSB CHI97LA115](https://openairdocs.org/ntsb/CHI97LA115.md): Cessna 182P · Duluth, MN · Accident · Serious injuries · Limited investigation · Final report · Apr 27, 1997 · N7355Q · Substantial damage
  > the loss of engine power for undetermined reasons and the pilot's failure to maintain aircraft control.
- [NTSB CHI97FA116](https://openairdocs.org/ntsb/CHI97FA116.md): Piper PA-22-150 · Holland, MI · Accident · 2 fatal · Field investigation · Final report · Apr 26, 1997 · N3126Z · Destroyed
  > The pilot's failure to maintain adequate airspeed which resulted in a stall/mush and subsequent impact with trees and then a residence. A related factor was turbulence.
- [NTSB LAX97LA167](https://openairdocs.org/ntsb/LAX97LA167.md): Cessna 172P · San Jose, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 25, 1997 · N63754 · Destroyed
  > The student pilot's failure to maintain adequate airspeed to preclude stalling following an improper recovery from a bounced landing. Contributing factors were the pilot's premature and excessive flap retraction and misjudged landing flare.
- [NTSB FTW97LA178](https://openairdocs.org/ntsb/FTW97LA178.md): Rans S-12 · Goldsby, OK · Accident · Serious injuries · Limited investigation · Final report · Apr 23, 1997 · UNREG · Destroyed
  > the pilot-in-command's improper judgment in allowing the passenger to control the airplane, and the pilot-in-command's inadequate supervision. Factors relating to the accident were: the passenger's failure to maintain minimum required airspeed, which resulted…
- [NTSB NYC97LA079](https://openairdocs.org/ntsb/NYC97LA079.md): Cessna 150 · Lehighton, PA · Accident · Minor injuries · Limited investigation · Final report · Apr 22, 1997 · N6717F · Substantial damage
  > replacement of the flap actuating system fuse by the pilot-in-command with the flap actuating handle in the fully retracted position. This resulted in the retraction of the flaps, an inadvertent stall/mush, and the subsequent in-flight collision with terrain.
- [NTSB CHI97LA110](https://openairdocs.org/ntsb/CHI97LA110.md): Gulfstream 500B · Mission, KS · Accident · Serious injuries · Limited investigation · Final report · Apr 22, 1997 · N4918 · Substantial damage
  > the pilot's inadequate preflight planning which resulted in fuel exhaustion.
- [NTSB MIA97LA143](https://openairdocs.org/ntsb/MIA97LA143.md): Cessna 150G · Raleigh, NC · Accident · No injuries · Limited investigation · Final report · Apr 19, 1997 · N3235X · Substantial damage
  > failure of the pilot to maintain proper runway alignment during the attempted landing and go-around. Factors relating to the accident were: the gusty crosswind condition, and proximity of trees to the runway.
- [NTSB LAX97LA165](https://openairdocs.org/ntsb/LAX97LA165.md): Let Blanik L-13 · Hemet, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 19, 1997 · N90620 · Substantial damage
  > the pilot's failure to adjust his traffic pattern to compensate for local atmospheric conditions.
- [NTSB MIA97LA140](https://openairdocs.org/ntsb/MIA97LA140.md): Cessna 150M · Ormond Beach, FL · Accident · No injuries · Limited investigation · Final report · Apr 18, 1997 · N63666 · Substantial damage
  > the flight crew's improper planning/decision, which resulted in loss of engine power due to fuel exhaustion.
- [NTSB LAX97IA161](https://openairdocs.org/ntsb/LAX97IA161.md): Boeing 737-500 · Rialto, CA · Incident · Minor injuries · Incident investigation · Final report · Apr 17, 1997 · N930UA · No damage
  > a laser light source of undetermined origin, directed by unknown person(s) toward the cockpit window of the aircraft, while the aircraft was on an approach to land.
- [NTSB FTW97IA160](https://openairdocs.org/ntsb/FTW97IA160.md): Boeing 737-300 · Colorado Spgs, CO · Incident · No injuries · Incident investigation · Final report · Apr 17, 1997 · N962WP · No damage
  > An oil leak around the APU aft bearing seal which resulted in a fire in the APU exhaust.
- [NTSB NYC97LA073](https://openairdocs.org/ntsb/NYC97LA073.md): Piper PA-32R-300 · Lumberton, NJ · Accident · No injuries · Limited investigation · Final report · Apr 14, 1997 · N29M · Substantial damage
  > The pilot's delay in initiating remedial action to arrest an excessive descent rate during a go-around. A crosswind condition was a contributing factor.
- [NTSB LAX97LA160](https://openairdocs.org/ntsb/LAX97LA160.md): Schweizer SGS 2-33A · Llano, CA · Accident · No injuries · Limited investigation · Final report · Apr 12, 1997 · N2037T · Substantial damage
  > the student pilot's inadequate compensation for the crosswind condition, and his failure to maintain proper altitude and clearance from the boundry fence, during an approach to land on the runway. Factors relating to the accident were: the crosswind, and…
- [NTSB FTW97LA158](https://openairdocs.org/ntsb/FTW97LA158.md): Piper PA-31-350 · El Paso, TX · Accident · No injuries · Limited investigation · Final report · Apr 12, 1997 · XASBM · Substantial damage
  > the pilot's improper plannning/decision, which resulted in loss of engine power (both engines) due to fuel exhaustion. Darkness was a related factor.
- [NTSB CHI97FA102](https://openairdocs.org/ntsb/CHI97FA102.md): Cessna T210N · Vichy, MO · Accident · 2 fatal · Field investigation · Final report · Apr 12, 1997 · N5310A · Destroyed
  > failure of the pilot to properly follow the missed approach procedure and maintain the minimum descent altitude (MDA) during night/IFR flight. Factors relating to the accident included: darkness, low ceiling, fog, and failure of the pilot to properly…
- [NTSB ANC97LA056](https://openairdocs.org/ntsb/ANC97LA056.md): Boeing 747-400 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · Apr 12, 1997 · VRHUK · Substantial damage
  > An in-flight collision with a large bird.

Next page: https://openairdocs.org/ntsb-phases/500/cases.md?page=119

## 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 = 500)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-phases/500/cases?page=118

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.