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Braniff International Airways Flight 352

3 May 1968 · Navarro County, near Dawson, Texas, US

Lockheed L-188 · Flight into thunderstorm leading to in-flight breakup

From William P. Hobby Airport (HOU) to Dallas Love Field (DAL)

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Event

Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
Accident
InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
Unknown
Event fatalities
85 · all aircraft and ground
Ground fatalities
0
Occupants
85
Survivors
0
InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
0 serious · 0 minor (NTSB)
OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
Airline
WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
Instrument Meteorological Cond

Lockheed L-188

Aircraft type
Lockheed L-188
Category
Airplane
RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
N9707C
Onboard fatalities
Unknown
Route
From William P. Hobby Airport (HOU)To Dallas Love Field (DAL)
Aircraft age
Not recorded
Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
Part 121: Air carrier (scheduled domestic passenger service)
Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
En route · cruise
Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
Turbulence
DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
Destroyed

Cause areas

  • Airframe › Other
  • Miscellaneous acts, conditions › Overload failure
  • Pilot in command › Exceeded designed stress limits of aircraft
  • Pilot in command › Improper in-flight decisions or planning
  • Weather › Turbulence, associated w/clouds and/or thunderstorms

Approximate · Coordinates from the Wikipedia article; not checked against an investigation report.

From the Wikipedia article

Braniff International Airways Flight 352 was a scheduled domestic flight from William P. Hobby Airport in Houston, Texas, United States, to Dallas Love Field in Dallas. On May 3, 1968, a Lockheed L-188A Electra flying on the route, registration N9707C, disintegrated in midair and crashed near Dawson, Texas, after flying into a severe thunderstorm. It was carrying five crew and 80 passengers, all of whom were killed, including Texas state representative Joseph Lockridge. An investigation revealed the cause to be the captain's decision to penetrate an area of heavy weather and the crew's subsequent steep 180-degree turn to escape the conditions, which caused structural overstress and failure of the airframe.

Flight history

Earlier in the day at 12:40, the crew of the accident flight (consisting of 45-year-old captain John R. Phillips, 32-year-old first officer John F. Foster and 28-year-old flight engineer Donald W. Crossland), flew from Dallas to Houston without experiencing significant weather conditions. No record of any crew briefing about the updated weather was made by representatives of the Weather Bureau, Federal Aviation Administration, or Braniff. The crew did receive papers, though, with weather reports and forecasts for the route and terminals.

At 16:11, the crew departed William P. Hobby Airport as Braniff Flight 352, a Lockheed L-188A Electra four-engined turboprop, en route to Dallas Love Field. About 25 minutes into the flight, while cruising at FL200 (about 20,000 ft above mean sea level), the aircraft approached an area of severe thunderstorm activity. The crew requested to descend to 15,000 ft and to deviate to the west. Air traffic control (ATC) informed the crew that other flights in the area were deviating to the east and suggested they do the same, but the Electra crew reported that the west seemed a better option on their onboard weather radar: "Three fifty two does it look good (better). On our scope here it looks like to the uh a little just a little bit to the west would do us real fine." ATC then cleared the flight to descend to 14,000 ft and deviate to the west as they requested. The westerly deviation would have been shorter and quicker than an easterly one.

At 16:44, the crew requested, and ATC cleared, to descend to 5,000 ft. The crew asked ATC if hail in the area had been reported, but ATC replied: "No, you're the closest one that's ever come to it yet... I haven't been able to, anybody to, well I haven't tried really to get anybody to go through it, they've all deviated around to the east."

At 16:47, the flight encountered an area of severe weather, including hail, and requested a 180° right turn, which ATC immediately approved. While turning to the right in severe turbulence, the plane's bank angle was increased to more than 90°, and the nose pitched down to about 40°. As the crew attempted to recover from the steep diving turn, the aircraft experienced acceleration forces of greater than 4 g, which caused the right wing to fail. The aircraft then began to disintegrate at an altitude of 6,750 ft and crashed in flames into the ground at about 16:48, killing all 85 people on board.

Witnesses said the Electra, a modified version of the trouble-plagued Lockheed aircraft that had experienced two wing-failure accidents in 1959 and 1960, had exploded before it hit the ground, and that pieces "fishtailed" down through sheets of rain, but the FBI did not suspect a criminal cause. Cloyce Floyd of Dawson, about 1 mi from the crash scene, was driving in the rain when he saw an "orange flash". He said, "I looked over to the left, and I could see this red ball of fire hanging back there about the size of the sun. From the glare of the fire, I could see the fuselage sort of fishtailing down. Then it hit and exploded."

A Mexia firefighter stated that the "wreckage was scattered all over the place."

Investigation and cause

Investigation

The National Transportation Safety Board (NTSB) investigated the accident. The flight data recorder (FDR) and cockpit voice recorder (CVR) were recovered from the wreckage with their data mostly intact, and the cockpit audio was reconstructed and transcribed. The NTSB correlated the cockpit conversations with the ATC communications transcript and noted that it was the first officer, at the captain's request, who asked ATC about reports of hail in the area. ATC replied that it had no reports of hail because other aircraft had "all deviated around to the east." At that point, the captain advised the first officer: "No, don't talk to him too much. I'm hearing his conversation on this. He's trying to get us to admit (we're makin) big mistake coming through here."

Shortly thereafter, the first officer stated: "It looks worse to me over there." The crew then requested and received clearance from ATC for the 180° turn. The turn became extremely steep, with a bank angle greater than 90° and a nose pitch-down angle of 40°. As the crew was trying to recover from the turn, the FDR indicated a peak acceleration of 4.3 g, which the NTSB concluded caused overstress to the airframe and resulted in its breakup.

On June 19, 1969, the NTSB issued its final report, which included the following statement: "Probable Cause: The stressing of the aircraft structure beyond its ultimate strength during an attempted recovery from an unusual attitude induced by turbulence associated with a thunderstorm. The operation in the turbulence resulted from a decision to penetrate an area of known severe weather."

In 2023, a copy of the CVR recording was located in an archive of a Dallas recording studio. The recording was posted to the YouTube channel of the Fort Worth Star-Telegram on April 27, 2023.

Text from the Wikipedia article “Braniff International Airways Flight 352” (revision 1339312745, retrieved 2026-09-18) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out. Read the article

NTSB remarks

DURG ATTMPTD RECOVERY FROM UNUSUAL ATTITUDE INDUCED BY TSTM TURB,R WING FAILED IN OVERLOAD.

NTSB's remark from its 1962–1981 archive, as recorded (abbreviated, at most 98 characters): the archive has no narrative

Sources

Wikipedia article: Braniff International Airways Flight 352
Article
Braniff International Airways Flight 352
Revision
1339312745 · 2026-02-19 · retrieved 2026-09-18
Wikidata
Q4957361
Licence
Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
NTSB record
Event ID
19680503P023233
Case number
Unknown
Dataset
historical-pre1982
Source SHA-256
abe1a933b4b73583d61684309f7f0610c281e3c1de3537c6471bf2a98ba6481d
Where each value comes from
Record
Wikipedia article "Braniff International Airways Flight 352" (page 7446624, revision 1339312745); merged with NTSB case NTSB19680503P023233 (PRE1982 tblFirstHalf (one row per aircraft, grouped by date, place and time))
Date
NTSB record NTSB19680503P023233: PRE1982 DATE_OCCURRENCE
Place and country
Wikipedia infobox: site; country from NTSB record NTSB19680503P023233
Map position
Wikipedia: Wikipedia article coordinates
Aircraft, operator and route
NTSB record NTSB19680503P023233: PRE1982 REGIST_NO, ACFT_MAKE, ACFT_MODEL; gaps from Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
Operation
NTSB record NTSB19680503P023233: operated under Part 121: Air carrier (scheduled domestic passg.svc)
Fatalities
NTSB record NTSB19680503P023233: PRE1982 TOTAL_ABRD_FATAL of each aircraft, plus people on the ground and others outside the aircraft
Ground fatalities
NTSB record NTSB19680503P023233: events.inj_f_grnd
Summary
Wikipedia infobox: summary
Source notes (4)
  • One occurrence in two sources, merged: the Wikipedia article "Braniff International Airways Flight 352" and NTSB case NTSB19680503P023233, matched by the same aircraft registration and date. For this US event the NTSB's values are used where the two differ; each value names its source.
  • From NTSB's 1962-1981 archive (PRE1982), which holds at most a short remark (98 characters, abbreviated) instead of a narrative; the accident type, phase of flight, causes and conditions are NTSB's codes, decoded as the archive defines them.
  • Reviewed means this record passed the site's consistency check, not that it was checked against a narrative or report - there is none to check against.
  • The operation category is mapped from the archive's operator and operation codes and has not been reviewed.