An air carrier medium large transport ran off the end of the runway after losing a thrust reverser a...

Attributes
ACN	230101
Time
Date	199301
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 100 agl bound upper : 100
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 250 flight time total : 7800
ASRS Report	230101
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 9500
ASRS Report	230445
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

After the captain's pre-takeoff brief. We took off on runway 35L at den. Power and all callouts were normal until the 'positive rate, gear up' call. When I put the gear up, we heard a 'bang!' vibration shook the aircraft. A roll and yaw into the right engine followed at between 100-200 ft AGL. The captain asked which one is it? And I stated 'the right one.' captain called 'ignition override, check fuel system.' we climbed to about 6000 ft MSL and began to run the checklist for an engine failure. The engine (right) was developing power, but at a reduced rate. We went through the engine failure checklist and single engine in-range landing. Maximum altitude was 7200 ft MSL. After landing, braking and left engine thrust reverse was normal (as all hydraulic system functions) until braking was needed at end of runway. We had no hydraulic power to the brakes (the accumulator charge was gone). We rolled off the end of the runway at a low speed and the aircraft came to rest short of a taxiway. We did not know we had lost hydraulic pressure for there was no annunciator light. The thrust reverser of the right engine had fallen off tearing out wiring and hydraulic lines. With no warning(south) we did not have the clues for additional failures. Further, we did not know that the thrust reverser had fallen off so, without that airborne information, we couldn't determine what was wrong. We went on information at hand. Loss of thrust reverser right engine. Loss of hydraulic fluid due to lines being exposed. Loss of brakes due to above circumstances. Supplemental information from acn 230445: a flash of the master caution for approximately 1 second followed by a flash of the right reverse unlock light were the only cockpit indications that we got. The brakes failed at 80 KTS. We departed the runway at the departure end to the left to avoid a fence. We did a 180 degree turn using reverse thrust from the left engine. The left main gear sunk in a ditch which stopped the aircraft.

Original NASA ASRS Text

Title: AN ACR MLG RAN OFF THE END OF THE RWY AFTER LOSING A THRUST REVERSER AND ALL BRAKES. AFTER RETURN/LAND DUE TO SUSPECTED ENG FAILURE.

Narrative: AFTER THE CAPT'S PRE-TKOF BRIEF. WE TOOK OFF ON RWY 35L AT DEN. PWR AND ALL CALLOUTS WERE NORMAL UNTIL THE 'POSITIVE RATE, GEAR UP' CALL. WHEN I PUT THE GEAR UP, WE HEARD A 'BANG!' VIBRATION SHOOK THE ACFT. A ROLL AND YAW INTO THE R ENG FOLLOWED AT BTWN 100-200 FT AGL. THE CAPT ASKED WHICH ONE IS IT? AND I STATED 'THE R ONE.' CAPT CALLED 'IGNITION OVERRIDE, CHK FUEL SYS.' WE CLBED TO ABOUT 6000 FT MSL AND BEGAN TO RUN THE CHKLIST FOR AN ENG FAILURE. THE ENG (R) WAS DEVELOPING PWR, BUT AT A REDUCED RATE. WE WENT THROUGH THE ENG FAILURE CHKLIST AND SINGLE ENG IN-RANGE LNDG. MAX ALT WAS 7200 FT MSL. AFTER LNDG, BRAKING AND L ENG THRUST REVERSE WAS NORMAL (AS ALL HYD SYS FUNCTIONS) UNTIL BRAKING WAS NEEDED AT END OF RWY. WE HAD NO HYD PWR TO THE BRAKES (THE ACCUMULATOR CHARGE WAS GONE). WE ROLLED OFF THE END OF THE RWY AT A LOW SPD AND THE ACFT CAME TO REST SHORT OF A TXWY. WE DID NOT KNOW WE HAD LOST HYD PRESSURE FOR THERE WAS NO ANNUNCIATOR LIGHT. THE THRUST REVERSER OF THE R ENG HAD FALLEN OFF TEARING OUT WIRING AND HYD LINES. WITH NO WARNING(S) WE DID NOT HAVE THE CLUES FOR ADDITIONAL FAILURES. FURTHER, WE DID NOT KNOW THAT THE THRUST REVERSER HAD FALLEN OFF SO, WITHOUT THAT AIRBORNE INFO, WE COULDN'T DETERMINE WHAT WAS WRONG. WE WENT ON INFO AT HAND. LOSS OF THRUST REVERSER R ENG. LOSS OF HYD FLUID DUE TO LINES BEING EXPOSED. LOSS OF BRAKES DUE TO ABOVE CIRCUMSTANCES. SUPPLEMENTAL INFO FROM ACN 230445: A FLASH OF THE MASTER CAUTION FOR APPROX 1 SEC FOLLOWED BY A FLASH OF THE R REVERSE UNLOCK LIGHT WERE THE ONLY COCKPIT INDICATIONS THAT WE GOT. THE BRAKES FAILED AT 80 KTS. WE DEPARTED THE RWY AT THE DEP END TO THE L TO AVOID A FENCE. WE DID A 180 DEG TURN USING REVERSE THRUST FROM THE L ENG. THE L MAIN GEAR SUNK IN A DITCH WHICH STOPPED THE ACFT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

An air carrier medium large transport ran off the end of the runway after losing a thrust reverser and all brakes. After return/land due to suspected engine failure.