A jetstream 32 in cruise declared an emergency due to hydraulic brake pressure indication to the lef...

Attributes
ACN	377337
Time
Date	199708
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : stl
State Reference	MO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc tracon : stl tower : stl
Operator	common carrier : air carrier
Make Model Name	Jetstream 32
Operating Under FAR Part	Part 135
Flight Phase	cruise other landing other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 230 flight time total : 7800 flight time type : 3300
ASRS Report	377337
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	other Other
Supplementary
Primary Problem	Aircraft

Narrative:

During cruise flight noticed left toe pedal brake pressure gauge indicated approximately 700 psi at the pedal pressure with neither captain's nor first officer's feet on the pedals. Consulted company maintenance by radio for possible remedies but was unable to eliminate the indication. Declared an emergency and requested that equipment be available in case there actually was pressure applied to the brake. On touchdown left wheel was locked and tire deflated. Aircraft was unable to exit the runway under its own power. Callback conversation with reporter revealed the following information: the reporter stated the aircraft was a jetstream 32 and maintenance advised the cause of the locked brake was a failed brake assembly. The reporter said the 700 psi at the wheel was noticed in cruise and nothing suggested by company maintenance helped. Reporter stated the aircraft had no maintenance history of brake trouble and had never experienced this type of failure. The reporter advised while landing a little more power was used and helped in controling the aircraft. The reporter said the aircraft never left the runway but needed a tow to the gate.

Original NASA ASRS Text

Title: A JETSTREAM 32 IN CRUISE DECLARED AN EMER DUE TO HYD BRAKE PRESSURE INDICATION TO THE L MAIN GEAR BRAKE, ON LNDG BRAKE WAS LOCKED.

Narrative: DURING CRUISE FLT NOTICED L TOE PEDAL BRAKE PRESSURE GAUGE INDICATED APPROX 700 PSI AT THE PEDAL PRESSURE WITH NEITHER CAPT'S NOR FO'S FEET ON THE PEDALS. CONSULTED COMPANY MAINT BY RADIO FOR POSSIBLE REMEDIES BUT WAS UNABLE TO ELIMINATE THE INDICATION. DECLARED AN EMER AND REQUESTED THAT EQUIP BE AVAILABLE IN CASE THERE ACTUALLY WAS PRESSURE APPLIED TO THE BRAKE. ON TOUCHDOWN L WHEEL WAS LOCKED AND TIRE DEFLATED. ACFT WAS UNABLE TO EXIT THE RWY UNDER ITS OWN PWR. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE ACFT WAS A JETSTREAM 32 AND MAINT ADVISED THE CAUSE OF THE LOCKED BRAKE WAS A FAILED BRAKE ASSEMBLY. THE RPTR SAID THE 700 PSI AT THE WHEEL WAS NOTICED IN CRUISE AND NOTHING SUGGESTED BY COMPANY MAINT HELPED. RPTR STATED THE ACFT HAD NO MAINT HISTORY OF BRAKE TROUBLE AND HAD NEVER EXPERIENCED THIS TYPE OF FAILURE. THE RPTR ADVISED WHILE LNDG A LITTLE MORE PWR WAS USED AND HELPED IN CTLING THE ACFT. THE RPTR SAID THE ACFT NEVER LEFT THE RWY BUT NEEDED A TOW TO THE GATE.

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.

A jetstream 32 in cruise declared an emergency due to hydraulic brake pressure indication to the left main gear brake, on landing brake was locked.