HomeNewsArticle Display

B-1B accident report released

LANGLEY AIR FORCE BASE, Va. (AFNS) --

A displaced fold-down baffle in the left overwing fairing of a B-1B Lancer led to a fuel leak and a series of detonations that disabled the aircraft prior to it crashing Aug. 19, 2013, near Broadus, Montana, according to an Air Combat Command Accident Investigation Board report released Dec. 30, 2013.

The four crewmembers ejected safely and sustained non-life-threatening injuries. The aircraft was destroyed, with the government loss valued at approximately $317.7 million. There were no injuries to civilians, and damage to private property consisted of burnt pasture land.

Both aircraft and crew were assigned to the 34th Bomb Squadron, 28th Bomb Wing, Ellsworth Air Force Base, S.D. When the accident occurred, the pilots were participating in a post-deployment training flight allowing them to become current on combat-mission readiness training items.

The wings of the B-1B move from a forward position to an aft position to increase the aircraft's performance at different speeds. During a training mission, the pilot leveled the aircraft off at an altitude of roughly 20,000 feet. While on a descent to 10,000 feet, he swept the wings from the forward to the aft position. During the sweep, the aircraft developed an undetectable fuel leak in the main fuel line. Unbeknownst to the crew, approximately 7,000 pounds of fuel leaked into the aircraft during the training mission.

Eventually, the fuel contacted exposed portions of the hot precooler duct, ignited and caused an explosion that separated the left overwing fairing from the aircraft. Ignited fuel streamed from the exposed left overwing fairing cavity, heated one of the aircraft's fuel tanks, and ignited the fuel vapors inside the tank. This detonation spread through the fuel venting system that connects the fuel tanks in the aircraft, and resulted in a cascade of detonations that caused a complete and permanent loss of power to the crew compartment.

According to the results of the investigation, at some time prior to pilot's initiation of the wing sweep, the left fold down baffle became detached at one or more points, preventing it from folding as the wing swept aft. Because the baffle was detached, the wing pushed the baffle into the overwing fairing cavity where the tapered edge of the baffle cut a v-shaped hole in the main fuel line.

(Information courtesy of Air Combat Command Public Affairs news release)

Engage

Twitter
Don't miss this event LIVE at 3 p.m.! https://t.co/CFkBHJMCsi
Twitter
.@TeamTyndall's SrA Can Liu deployed to support the #COVID19 vaccination efforts in New York. She is the only Airma… https://t.co/LIfeJ48lNL
Twitter
The newest aircraft in the #AirForce fleet has been christened the F-15EX Eagle II. The Eagle II includes the lates… https://t.co/4TIA52fk06
Twitter
Congratulations to the Royal Danish Air Force on the delivery of their first F-35 today! Our Danish friends have be… https://t.co/Gg4fduigTg
Twitter
RT @GenCQBrownJr: Thank you to @Princeton for having me speak today with their University Lecture Series. I greatly appreciate the opportun…
Twitter
#DYK The #AirForce is the only military branch that has service-wide guidance on acquisition programs, defining cyb… https://t.co/UJZcxugySn
Twitter
RT @366FW: Air Force Chief of Staff @GenCQBrownJr shares some words of wisdom with our Gunfighters! Our Airmen continue to #acceleratecha
Twitter
April is recognized as the Month of the Military Child. The ever-changing military lifestyle impacts every member o… https://t.co/hmvocXQaGL
Twitter
Airmanship 200 is the second of three development courses that new #Airmen receive to better understand #AirForce v… https://t.co/1rueS9ToLP
Twitter
#ICYMI -- The Department of the Air Force published a website where #Airmen and @SpaceForceDoD #Guardians can acces… https://t.co/0YJcST5XaT
Twitter
Combating #COVID19 one shot at a time. https://t.co/EVyenHCi5D
Twitter
The Department of the Air Force-Massachusetts Institute of Technology Artificial Intelligence Accelerator is helpin… https://t.co/cfsdOX43hY
Twitter
.@LRAFB, Arkansas, Airmen completed 106 sorties, 254 flying hours, and nearly 2,000 training events during a multi-… https://t.co/3YOSh8DvcT
Twitter
Today is Gold Star Spouses Day. It honors the surviving loved ones of military service members killed in the line o… https://t.co/JYCacpkds5
Twitter
Everyone is susceptible to invisible wounds. These wounds have an impact can develop at any time, in any place, in… https://t.co/XxPKyovJc9
Twitter
#AirForce Civil Engineer Center Operation Directorate teams are following safety protocols and working closely with… https://t.co/4IjMrV240S
Twitter
RT @grandslamwing: Beware of frostbite 🥶 Our #TeamAUAB cryogenics team brave the heat of the flightline to deliver aircrew the frigid, but…
Twitter
Being able to recognize an invisible wound could save a life. Learn more about available resources here:… https://t.co/M9JOy6XRWn
Twitter
“When you believe in something, you just have to put your heart and soul into it and don’t worry about what the res… https://t.co/K44qwDwFMG
Twitter
Second Lt. Max Atkinson, a student pilot in the 71st Student Squadron at Vance AFB saved the life of a local motorc… https://t.co/SHv1e8Te6M
Facebook
The newest Air Force Podcast recently dropped. Listen to a small snippet of CMSAF Kaleth O. Wright talk with Staff Sgt. New about resiliency. Listen to the entire podcast on Youtube: https://go.usa.gov/xpnAD or Subscribe to The Air Force Podcast on iTunes: https://podcasts.apple.com/podcast/the-air-force-podcast/id1264107694?mt=2
Facebook
Our mantra, "Always ready!" It's the spirit we fly by! #B2Tuesday
Facebook
Need some motivation to get your week started off right? Listen as CMSAF Kaleth O. Wright weighs in...
Facebook
The U.S. Air Force Academy gives its cadets some unique opportunities. Ride along one of this opportunities.
Facebook
A United States Air Force KC-135 Stratotanker refuels an F-22 Raptor over northern Iraq, Nov. 6, 2019. U.S. Central Command operations deter adversaries and demonstrate support for allies and partners in the region. (Video by Staff Sgt. Daniel Snider)
Facebook
Although the Silver Star is the third-highest military medal, it's not given often. Today, TSgt Cody Smith was the 49th Special Tactics Airman to receive this medal since Sept. 11th, 2001. Read more of TSgt Smith's amazing story: https://www.airforcespecialtactics.af.mil/News/Article-Display/Article/2024815/special-tactics-airman-battled-through-injuries-awarded-silver-star/fbclid/IwAR2LZWwx1VHdTnQe39rIEBOuJS_0JvMQBBGt7I-E6zsxxn-Lx9387yu43Bc/ Cannon Air Force Base Air Force Special Operations Command United States Special Operations Command (USSOCOM) U.S. Department of Defense (DoD)
Facebook
Tune in as our Air Force musicians along with other military musicians are awarded the National Medal of Arts.
Facebook
Like Us
Twitter
1,340,450
Follow Us