An MD80 on landing rollout declared an emergency due to loss of left hydraulic system pressure and q...

Attributes
ACN	394448
Time
Date	199802
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	landing other other
Flight Plan	IFR
Aircraft 2
Make Model Name	MD-80 Super 80
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 14000 flight time type : 1400
ASRS Report	394448
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : flight engineer pilot : atp pilot : commercial pilot : instrument
Experience	flight time last 90 days : 160 flight time total : 6300
ASRS Report	395194
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency none taken : detected after the fact other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Flight xyz. On landing in bos runway 27, the left hydraulic quantity and pressure dropped to zero on the rollout. I stopped the aircraft, shut down the left engine and secured the hydraulic system. I then called for fire trucks to check the aircraft for damage and to provide a fire guard due to the fact that we had lost all hydraulic quantity and I did not know where the leak was. When the fire trucks arrived they advised me that they thought we had fuel leaking from the aircraft. We secured the aircraft and did an orderly deplaning out the aft stairs. When I got off the aircraft I asked the fireman to show me the fuel leak. He did and it was not a fuel leak. Just hydraulic oil. Callback conversation with reporter revealed the following information: the reporter stated the loss of the left hydraulic system pressure and quantity was caused by a failed left reverser control valve. The reporter said the left reverser was hard to stow after landing and the reverser unlock light remained on continuously. The reporter said the APU was not running so no hydraulic fluid entered the APU to cause smoke in the cabin.

Original NASA ASRS Text

Title: AN MD80 ON LNDG ROLLOUT DECLARED AN EMER DUE TO LOSS OF L HYD SYS PRESSURE AND QUANTITY.

Narrative: FLT XYZ. ON LNDG IN BOS RWY 27, THE L HYD QUANTITY AND PRESSURE DROPPED TO ZERO ON THE ROLLOUT. I STOPPED THE ACFT, SHUT DOWN THE L ENG AND SECURED THE HYD SYS. I THEN CALLED FOR FIRE TRUCKS TO CHK THE ACFT FOR DAMAGE AND TO PROVIDE A FIRE GUARD DUE TO THE FACT THAT WE HAD LOST ALL HYD QUANTITY AND I DID NOT KNOW WHERE THE LEAK WAS. WHEN THE FIRE TRUCKS ARRIVED THEY ADVISED ME THAT THEY THOUGHT WE HAD FUEL LEAKING FROM THE ACFT. WE SECURED THE ACFT AND DID AN ORDERLY DEPLANING OUT THE AFT STAIRS. WHEN I GOT OFF THE ACFT I ASKED THE FIREMAN TO SHOW ME THE FUEL LEAK. HE DID AND IT WAS NOT A FUEL LEAK. JUST HYD OIL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE LOSS OF THE L HYD SYS PRESSURE AND QUANTITY WAS CAUSED BY A FAILED L REVERSER CTL VALVE. THE RPTR SAID THE L REVERSER WAS HARD TO STOW AFTER LNDG AND THE REVERSER UNLOCK LIGHT REMAINED ON CONTINUOUSLY. THE RPTR SAID THE APU WAS NOT RUNNING SO NO HYD FLUID ENTERED THE APU TO CAUSE SMOKE IN THE CABIN.

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 MD80 on landing rollout declared an emergency due to loss of left hydraulic system pressure and quantity.