American Airlines Flight 383 (2016)

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American Airlines Flight 383
American Airlines B767 (27467686432).jpg
N345AN, the aircraft involved, in June 2016
Accident
DateOctober 28, 2016 (2016-10-28)
Summary Uncontained engine failure and fire
Site O'Hare International Airport, Chicago, Illinois, United States
41°57′58″N87°54′04″W / 41.966°N 87.901°W / 41.966; -87.901
Aircraft
Aircraft type Boeing 767-323(ER) [lower-alpha 1]
Operator American Airlines
IATA flight No.AA383
ICAO flight No.AAL383
Call signAMERICAN 383
Registration N345AN
Flight origin O'Hare International Airport, Chicago, Illinois, U.S.
Destination Miami International Airport, Miami, Florida, U.S.
Occupants170
Passengers161
Crew9
Fatalities0
Injuries21
Survivors170

American Airlines Flight 383 was a scheduled passenger flight from O'Hare International Airport in Chicago, Illinois to Miami International Airport. On October 28, 2016, the Boeing 767-300ER operating the flight suffered an engine fire during takeoff. The crew aborted their takeoff, evacuating everyone on board, of whom 21 were injured. The plane was a write-off.

Contents

The incident was caused by the rupture of a disk in the starboard engine, with one fragment piercing the fuel tank in the wing. The investigation revealed the need for more stringent directives for ultrasonic inspection of engines.

As of December 2023, flight designation AAL383 has been recycled and is now used as a service between Los Angeles—O’Hare. [1] The service between O’Hare and Miami operates under flight numbers 2960, 1411, 2982, 1277, 2323, 818 and 2715. American Airlines utilises either a Boeing 737 NG or a Boeing 737 MAX on these routes. [2]

Incident

On October 28, 2016, the Boeing 767-300ER operating the flight (registered N345AN) was accelerating for takeoff on runway 28R when the aircraft's right engine suffered an uncontained failure that led to a severe fire. The crew managed to abort the takeoff and evacuate everyone on board, while emergency services extinguished the fire. Twenty-one people were injured, and the aircraft was substantially damaged, written off, [3] [4] and stored. [5] [6] [7]

The right engine had suffered a sudden rupture of the stage 2 disk operating at takeoff power. The disk separated into two pieces, the smaller of which pierced the wing's fuel tank and then flew 2,935 feet (895 m), falling through the roof of a United Parcel Service (UPS) facility and coming to rest on the building's floor. No one was injured in the UPS building. [8] The investigation revealed the need for more stringent airworthiness directives for ultrasonic inspection of engines.

Aircraft and crew

N345AN, the aircraft involved, seen in 2010 while still wearing the airline's 1968-2013 livery. N345AN B767W American Airlines (4846657448).jpg
N345AN, the aircraft involved, seen in 2010 while still wearing the airline's 1968–2013 livery.

The aircraft, a thirteen-year-old Boeing 767-323(ER) [lower-alpha 2] powered by two General Electric CF6-80C2B6 engines, registration number N345AN, was delivered to American in 2003. [3]

Aircraft and crew

The captain was 61-year-old Anthony Kochenash. He had been flying with American Airlines since May 2001 and previously flown with TWA from January 1986 to April 2001. Kochenash also served with the United States Air Force from May 1978 to October 1985, flying both the KC-135 and the CT-39. He had 17,400 flight hours, including 4,000 hours on the Boeing 767. [3] [9] The first officer was 57-year-old David Ditzel. Like the captain, he had also been working for American Airlines since May 2001 and previously flown with TWA from December 1995 to April 2001. He had 22,000 flight hours, with 1,600 of them on the Boeing 767. [3] [10]

Fire

At 14:30 (2:30 PM) Central Daylight Time (CDT), Flight 383 was cleared for takeoff on runway 28R. The aircraft commenced its takeoff roll one minute later with Captain Kochenash as the pilot flying and First Officer Ditzel as the pilot monitoring. At 14:31:32, Ditzel called out "eighty knots," however, 11 seconds after this callout was made, the cockpit voice recorder (CVR) recorded a loud noise. The aircraft began to veer right and Kochenash rejected the takeoff. [3] : 1–2 

The damage to the aircraft after the fire was extinguished American Airlines Flight 383(N345AN)wreckage.jpg
The damage to the aircraft after the fire was extinguished

Ditzel radioed to the control tower, "American three eighty-three heavy stopping on the runway." The controller had already noticed the engine failure and responded "roger roger. Fire," advising the crew of the situation. Ditzel asked the tower controller, "do you see any smoke or fire?" The controller said, "yeah fire off the right-wing." He then ordered the fire trucks to be sent to the aircraft. Kochenash called for the engine fire checklist, the right engine was shut off, and its fire extinguisher was activated. Kochenash then called for the evacuation checklist, during which the flight attendants had already initiated an evacuation, despite the command not having been given (which is not required). After shutting down the left engine, Kochenash finally gave the evacuation command and sounded the evacuation alarm. The first emergency exit (the left overwing window exit) was opened 8 to 12 seconds after the aircraft stopped. After completing the evacuation checklist, the pilots then evacuated. [3]

The right side of the fuselage suffered considerable fire damage. The right wing collapsed about midway along its length. American subsequently declared the aircraft a hull loss. The accident marks the 17th hull loss of a Boeing 767. [11] [12]

On the same day, FedEx Express Flight 910 had crash-landed in Fort Lauderdale-Hollywood International Airport; everyone was unharmed. [13]

Investigation and recommendations

In July 2017, GE Aviation issued a Service Bulletin recommending that airlines perform regular inspections of first- and second-stage disks of all CF6 engines built prior to 2000. [14]

On January 30, 2018, the National Transportation Safety Board (NTSB) issued its final report on the incident involving American 383. [3] It traced the origin of the failure in disk 2 to a "discrete dirty white spot" that in the Board's judgement would have been undetectable, at manufacture or subsequent inspection, with the inspection techniques available. The NTSB made several safety recommendations as a result, not only with regards to the engine and aircraft but also to issues raised by the evacuation.

Engine inspections

Although the CF6 had been the subject of multiple Federal Aviation Administration (FAA) airworthiness directives, they had not focused on the larger, relatively slower Stage 1 disks at the front of the engine, made with a nickel alloy. Although the FAA had signaled its intent to issue an order for ultrasonic inspections of CF6-80s in September 2017, the NTSB called for such inspections to be extended to all large commercial aircraft engine models in service. On August 30, 2018, the FAA issued an airworthiness directive that required airlines to perform ongoing ultrasonic inspections for cracks in stage 1 and stage 2 disks on engines like those involved in Flight 383. [15] The NTSB also called for increased design precautions, based on multiple uncontained disk ruptures, to be continually integrated into all commercial aircraft design, especially of the wings and fuel tanks; the FAA has not yet responded to that recommendation.

Procedures

The Board recommended separate engine fire checklists for ground vs. in-flight operation; the checklist used did not so differentiate, and so did not include a separate step where, if the plane was on the ground, the other engine should be stopped to allow evacuation. As a result, a passenger evacuating using the left overwing exit was the only person seriously injured after being knocked to the ground by exhaust from the still-operating engine. In addition, the checklist provided to the pilots called for discharge of only one of the two fire extinguisher bottles in the affected engine, followed by a wait of 30 seconds to judge its effectiveness; however, other checklists specific to ground operations call for immediate use of both bottles in order to create a safer environment for evacuation of the aircraft. [3]

The Board also faulted communication efforts among the crew, including the inability of flight attendants to successfully operate the interphone (which differed from the model used in training) and the failure of the flight crew to keep attendants informed of their intention to evacuate. The Board also called for research into countermeasures against passengers evacuating with carry-on luggage despite being specifically instructed not to do so by crew. [3]

See also

Notes

  1. ↑ The aircraft was a Boeing 767-300(ER) model; Boeing assigns a unique code for each company that buys one of its aircraft, which is applied as a suffix to the model number at the time the aircraft is built, hence "767-323(ER)" designates a 767-300(ER) built for American Airlines (customer code 23).
  2. ↑ The aircraft was a Boeing 767-300(ER) model; Boeing assigns a unique code for each company that buys one of its aircraft, which is applied as a suffix to the model number at the time the aircraft is built, hence "767-323(ER)" designates a 767-300(ER) built for American Airlines (customer code 23).

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References

  1. ↑ "AA383 (AAL383) American Airlines Flight Tracking and History". FlightAware. Retrieved December 17, 2023.
  2. ↑ "Flight Finder ✈ Chicago O'Hare Intl (KORD) - Miami Intl (KMIA)". FlightAware. Retrieved December 17, 2023.
  3. 1 2 3 4 5 6 7 8 9 "Uncontained Engine Failure and Subsequent Fire American Airlines Flight 383 Boeing 767-323, N345AN, Chicago, Illinois, October 28, 2016" (PDF). ntsb.gov. National Transportation Safety Board. January 30, 2018. NTSB/AAR-18/01. Retrieved April 4, 2018.
  4. ↑ Shapiro, Emily (October 28, 2016). "20 Injured After American Airlines Plane Catches Fire at Chicago's O'Hare Airport". ABC News. Retrieved October 29, 2016.
  5. ↑ "Resting almost two years after American flight 383". airliners.net. Liam Moya. August 3, 2018. Retrieved June 18, 2021.
  6. ↑ "Boeing 767-323 N345AN sits at the fire training facility at Chicago O'Hare". www.flickr.com. T.J. Van Haag. June 23, 2018. Retrieved June 18, 2021.
  7. ↑ "Google Earth capture, Chicago O'Hare International Airport, Unknown capture date". earth.google.com. Retrieved June 18, 2021.
  8. ↑ Ford, Liam; Lee, William; Wong, Grace (October 28, 2016). "20 minor injuries after plane catches fire on O'Hare runway: 'Everybody started panicking'". Chicago Tribune . Retrieved October 29, 2016.
  9. ↑ "NTSB report: As the Flight Crew focused on responding to the emergency, Flight Attendants were unable to establish communication with the cockpit, and so Flight Attendants and some passengers independently made the decision to evacuate plane after engine fire at O'Hare last year". Chicago Tribune. Associated Press. July 7, 2017. Retrieved April 29, 2020.
  10. ↑ "Operational Factors/Human Performance Factual Attachment 1 - Flight Crew Interview Summaries" (PDF). National Transportation Safety Board. May 31, 2017. Archived (PDF) from the original on February 6, 2021. Retrieved April 29, 2020.
  11. ↑ "Boeing 767 - MSN 33084 - N345AN". airfleets.net. Airfleets aviation. Retrieved April 4, 2018.
  12. ↑ Ranter, Harro. "ASN Aircraft accident Boeing 767-323ER (WL) N345AN Chicago-O'Hare International Airport, IL (ORD)". aviation-safety.net. Aviation Safety Network. Archived from the original on December 20, 2016. Retrieved September 16, 2019.
  13. ↑ Ranter, Harro. "ASN Aircraft accident McDonnell Douglas MD-10-10F N370FE Fort Lauderdale International Airport, FL (FLL)". aviation-safety.net. Aviation Safety Network. Archived from the original on January 6, 2017. Retrieved February 1, 2021.
  14. ↑ "GE recommends CF6 inspections following uncontained failure". flightglobal.com. Reed Business Information Ltd. Retrieved April 4, 2018.
  15. ↑ "Docket No. FAA-2017-0792; Product Identifier 2017-NE-28-AD; Amendment 39-19336; AD 2018-15-04" (PDF). faa.gov. Federal Aviation Administration. Retrieved September 2, 2018– via gpo.gov.
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