Amateur-built LONG EZ and Piper PA 28-180 mid-air collision near Tucson, Arizona, October 7, 2017
On October 7, 2017 at about 5:30 pm local time, 2 aircraft, amateur-built LONG EZ (N966EZ) and Piper PA 28-180 (N15664), were involved in a mid-air collision near Tucson, Arizona (Ryan Field). No one was hurt; 3 people were on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The failure of both pilots to see and avoid the other airplane while maneuvering in the traffic pattern, which resulted in a midair collision. Contributing to the accident was the controller's failure to provide adequate traffic information, issue necessary traffic advisories, and establish a safe traffic sequence for airplanes under his control in the Class D airspace.
The failure of both pilots to see and avoid the other airplane while maneuvering in the traffic pattern, which resulted in a midair collision. Contributing to the accident was the controller's failure to provide adequate traffic information, issue necessary traffic advisories, and establish a safe traffic sequence for airplanes under his control in the Class D airspace.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- October 7, 2017 · about 5:30 pm local time
- Place
- Tucson, Arizona · Ryan Field · map
- Type
- Accident · mid-air collision
- Injuries
- No one was hurt; 3 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft 1
- Amateur-built LONG EZ NO SERIES, built 1986
- Registration
- N966EZ · no longer on the register · serial 966
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
- Aircraft 2
- Piper PA 28-180 180, built 1972 · all PA 28-180s on the register
- Registration
- N15664 · registry record · serial 28-7305113
- Damage
- Minor damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative for the amateur-built LONG EZ final · quoted from the NTSB record
Two airplanes, a Long EZ and a Piper PA-28, collided in midair while in the traffic pattern about 1 mile northwest of the airport. The Long EZ pilot reported to the air traffic control (ATC) tower about 9 miles north of the airport that he was inbound for a full-stop landing. The controller instructed the Long EZ pilot to make left traffic to runway 6L and to report 2 miles on the 45° to runway 6L, which the pilot acknowledged. About 1 minute later, the Piper pilot reported about 8.5 miles northwest of the airport that he was inbound for a full-stop landing. He was instructed to enter a left base for runway 6L, which he acknowledged. The controller then instructed the Long EZ pilot to make a left 360° turn for traffic, which the pilot acknowledged. He then cleared the Long EZ to be “number two” to land on runway 6L, following a Cessna on a left base. The Long EZ pilot acknowledged his clearance. Shortly thereafter, two garbled transmissions were made. The controller then asked who was requesting runway 6R; the Long EZ pilot responded that he was not requesting runway 6R but wanted to confirm that traffic was landing on runway 6R. The controller stated that he had a Cessna on short final for runway 6L and a Piper Cherokee on about a 1-mile final for runway 6R. The Long EZ pilot transmitted that he had the wrong traffic in sight and that he now had the other landing traffic in sight on final. The controller told the Long EZ pilot to follow the traffic just over the numbers on runway 6L. The Long EZ pilot stated that while he was on downwind, he saw a Piper “passing rapidly directly above” him from the right. According to the Piper pilot, he began his turn for a left base to the runway when he noticed an airplane coming toward him from downwind. He further stated that he attempted to avoid the other airplane but that his airplane's landing gear struck the Long EZ. Both airplanes declared an emergency and landed uneventfully. The Long EZ sustained substantial damage to the left rudder, and the Piper sustained minor damage to the landing gear assembly. The pilots of both airplanes had the final authority for the operation of their airplanes and were required to see and avoid other airplanes. Further, although no specific ATC separations were applicable during the visual flight rules pattern operation, the controller was still required to be vigilant for traffic conflicts, provide traffic information and issue traffic advisories when necessary, and establish a safe traffic sequence to the runway.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The NTSB's narrative for the Piper PA 28-180 final · quoted from the NTSB record
Two airplanes, a Long EZ and a Piper PA-28, collided in midair while in the traffic pattern about 1 mile northwest of the airport. The Long EZ pilot reported to the air traffic control (ATC) tower about 9 miles north of the airport that he was inbound for a full-stop landing. The controller instructed the Long EZ pilot to make left traffic to runway 6L and to report 2 miles on the 45° to runway 6L, which the pilot acknowledged. About 1 minute later, the Piper pilot reported about 8.5 miles northwest of the airport that he was inbound for a full-stop landing. He was instructed to enter a left base for runway 6L, which he acknowledged. The controller then instructed the Long EZ pilot to make a left 360° turn for traffic, which the pilot acknowledged. He then cleared the Long EZ to be “number two” to land on runway 6L, following a Cessna on a left base. The Long EZ pilot acknowledged his clearance. Shortly thereafter, two garbled transmissions were made. The controller then asked who was requesting runway 6R; the Long EZ pilot responded that he was not requesting runway 6R but wanted to confirm that traffic was landing on runway 6R. The controller stated that he had a Cessna on short final for runway 6L and a Piper Cherokee on about a 1-mile final for runway 6R. The Long EZ pilot transmitted that he had the wrong traffic in sight and that he now had the other landing traffic in sight on final. The controller told the Long EZ pilot to follow the traffic just over the numbers on runway 6L. The Long EZ pilot stated that while he was on downwind, he saw a Piper “passing rapidly directly above” him from the right. According to the Piper pilot, he began his turn for a left base to the runway when he noticed an airplane coming toward him from downwind. He further stated that he attempted to avoid the other airplane but that his airplane's landing gear struck the Long EZ. Both airplanes declared an emergency and landed uneventfully. The Long EZ sustained substantial damage to the left rudder, and the Piper sustained minor damage to the landing gear assembly. The pilots of both airplanes had the final authority for the operation of their airplanes and were required to see and avoid other airplanes. Further, although no specific ATC separations were applicable during the visual flight rules pattern operation, the controller was still required to be vigilant for traffic conflicts, provide traffic information and issue traffic advisories when necessary, and establish a safe traffic sequence to the runway.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record for the amateur-built LONG EZ from the NTSB's investigation tables, in plain English
What happened, in order
- Midair collision during approach (VFR pattern downwind) defining event
The NTSB's findings
- cause Personnel issues › Psychological › Attention/monitoring › Monitoring other aircraft › Pilot
- cause Personnel issues › Task performance › Communication (personnel) › Issuing instructions › ATC personnel
Pilot
- Certificate: private
- Ratings: single-engine land
- Flight time: 1,247 hours in all; 1,093 in this make and model; 17 in the last 90 days; 6 in the last 30 days; 1,219 as pilot in command
- Last flight review: May 24, 2017
- Medical certificate: Class 3 (with waivers/limitations)
- Seat: frt
- Injury: no injuries
The aircraft
- Airframe total time: 1,093 hours
- Last inspection: condition inspection, June 15, 2017
- Seats: 2
- Landing gear: retractable
- Engine: Lycoming O-320 E2G (piston); 3,026 hours total
The flight
- Departed from: P13 Globe AZ at 5:00 pm
- Destination: RYN Tucson AZ
- Flight plan: none
- Runway 06L, 4,900 ft by 75 ft
Weather at the time
- Light: daylight
- Wind: from 090° at 3 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 14°F (-10°C)
- Altimeter: 29.92 inHg
- Observation at 4:58 pm from DMA, 149 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
The factual record for the Piper PA 28-180 from the NTSB's investigation tables, in plain English
What happened, in order
- Midair collision during approach (VFR pattern base) defining event
The NTSB's findings
- cause Personnel issues › Psychological › Attention/monitoring › Monitoring other aircraft › Pilot
- cause Personnel issues › Task performance › Communication (personnel) › Issuing instructions › ATC personnel
Pilot
- Certificate: private
- Ratings: single-engine land
- Medical certificate: Unknown
- Seat: left
- Injury: no injuries
Passenger
- Seat: rgt
- Injury: no injuries
The aircraft
- Last inspection: inspection type not recorded
- Landing gear: fixed
- Engine: Lycoming O&VO-360 SER (piston); 0 hours total
The flight
- Departed from: CHD Chandler AZ at 4:35 pm
- Destination: RYN Tucson AZ
- Flight plan: none
- Runway 06L, 4,900 ft by 75 ft
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under N966EZ the same tail number, which may have belonged to a different aircraft at the time
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The documents and photographs are the NTSB's docket, the folder of records gathered during the investigation, shown as the NTSB released them (the NTSB redacts some personal details first) and listed under the NTSB's own titles. This site's own text never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number WPR18LA003.
