# NTSB ATL86IA100: Boeing 737-200, N774N, Nasville, TN, March 21, 1986

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: March 21, 1986, 14:06 local (20:06 UTC)
- Place: Nasville, TN
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 131 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 7014
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL86IA100
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7014/pdf
- Page: https://openairdocs.org/ntsb/ATL86IA100

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Near collision between aircraft, descent - normal
  - remedial action - inadequate, pilot of other aircraft (cause)
  - remedial action - not possible, pilot in command
- Near collision between aircraft, maneuvering
  - remedial action - inadequate, pilot in command (cause)
  - remedial action - not possible, pilot of other aircraft

## Analysis (aircraft 2)

A NR MIDAIR COLLISION OCCURRED APRX 38 MI SE OF THE NASHVILLE METRO ARPT AS A BOEING 737, PIEDMONT FLT 488, WAS DSCNDG THRU APRX 12,000' & A FLT OF 4 F-4'S, CALL SIGN PEACH 41, WERE JOINING. FLT 488 WAS INBND TO NASHVILLE ON AN IFR CLNC & MEMPHIS ARTCC HAD CLRD IT TO DSCND TO 6000'. PEACH 41 HAD JUST COMPLETED A LOW-LVL HI-SPD FLT ON MIL TRNG ROUTE VR-1051.THE 1ST ELEMENT (#1 & #2) BGN A LEFT CLIMBING TURN FOR THE TRAILING ELEMENT (#3 & #4) TO JOIN & CALLED ARTCC FOR AN IFR CLNC. ARTCC TOLD PEACH 41 TO MAINT VFR & ADVISED BOTH FLTS OF EACH OTHER'S PSN. FLT 488 HAD SEEN THE F-4'S & WAS CLRD TODEVIATE TO THE LEFT. PEACH 41 LEADER OBTAINED RADAR CONTACT WITH FLT 488 & CLIMBED ABV 13,000'.  THE 2ND ELEMENT OF F-4'SAW FLT 488 & REMAINED LOW TO PASS UNDER THE AIRLINER. THE CREW OF FLT 488 DID NOT TAKE EVASIVE ACTION; THEY RPRTD 'NO ROOM EXISTED FOR US TO MANEUVER OUT OF THEIR FLIGHT PATH.'

## Analysis (aircraft 1)

A NR MIDAIR COLLISION OCCURRED APRX 38 MI SE OF THE NASHVILLE METRO ARPT AS A BOEING 737, PIEDMONT FLT 488, WAS DSCNDG THRU APRX 12,000' & A FLT OF 4 F-4'S, CALL SIGN PEACH 41, WERE JOINING. FLT 488 WAS INBND TO NASHVILLE ON AN IFR CLNC & MEMPHIS ARTCC HAD CLRD IT TO DSCND TO 6000'. PEACH 41 HAD JUST COMPLETED A LOW-LVL HI-SPD FLT ON MIL TRNG ROUTE VR-1051.THE 1ST ELEMENT (#1 & #2) BGN A LEFT CLIMBING TURN FOR THE TRAILING ELEMENT (#3 & #4) TO JOIN & CALLED ARTCC FOR AN IFR CLNC. ARTCC TOLD PEACH 41 TO MAINT VFR & ADVISED BOTH FLTS OF EACH OTHER'S PSN. FLT 488 HAD SEEN THE F-4'S & WAS CLRD TODEVIATE TO THE LEFT. PEACH 41 LEADER OBTAINED RADAR CONTACT WITH FLT 488 & CLIMBED ABV 13,000'. THE 2ND ELEMENT OF F-4'SSAW FLT 488 & REMAINED LOW TO PASS UNDER THE AIRLINER. THE CREW OF FLT 488 DID NOT TAKE EVASIVE ACTION; THEY RPRTD 'NO ROOM EXISTED FOR US TO MANEUVER OUT OF THEIR FLIGHT PATH.'

## Aircraft 1

- Registration: N774N (not matched to a registry record)
- Reported make and model: BOEING 737-200
- Category: Airplane
- Serial number: 21975
- Engines: P&W JT8D 15500 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Registered owner: First Security Bank Of Utah
- Airworthiness certificate: Standard, Transport
- Departed: HOU, HOUSTON, TX
- Flight plan: IFR

## Aircraft 2

- Registration: AFNG (not matched to a registry record)
- Reported make and model: McDonnell Douglas F-4
- Category: Airplane
- Engines: GE J-79 17000 lbs thrust turbo jet
- Damage: No damage
- Flight: Part 91
- Operator: Georgia Air National Guard
- Registered owner: Department Of Defense
- Departed: MGE, MARIETTA, GA
- Destination: MGE, MARIETTA, GA
- Flight plan: VFR/IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot, aircraft N774N; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left
- Pilot, aircraft 2; military; airplane ratings: multi-engine land; instrument ratings: airplane; medical: unknown, unknown; seat: front

## Weather

- Conditions: Visual (VMC), Day
- Wind: 360° at 14 knots, gusting 22
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 36 °F, dew point 10 °F
- Altimeter: 30.00 inHg
- Observed at: BNA, 30 nm away

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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