<< >> NASA ASRS Report 547014, May 2002

An F100 crew, cruising at FL290, experienced a hydraulic fluid loss, spawning an emergency and a return to departure airport.

Attributes
ACN	547014
Time
Date	200205
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zkc.artcc
State Reference	OK
Altitude	msl single value : 29000
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc.artcc tracon : tul.tracon tower : tul.tower
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	547014
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	549010
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other other
Supplementary
Problem Areas	Weather Aircraft Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

En route from tul to ord. During cruise approximately 100 NM from starting the arrival procedure, hydraulic system 1 quantity dropped to 35 psi and we received an alert message. Because of the loss of nosewheel steering, speed brakes and thrust reversers, we elected to return to tul rather than continue to ord where there was a wet runway, low ceilings, potential for strong xwinds and severe thunderstorms. The emergency was concluded successfully with a safe landing at tul. Supplemental information from acn 547010: I elected to divert back to tul rather than continue to ord. The return time en route to tul was used to plan for the emergency approach and landing, coordinate with dispatch, tul approach, tower, emergency maintenance and operations. Also, the return cruise provided an opportunity to burn fuel down to a light landing weight (approximately 73,000 pounds) and provided the flight attendants adequate time to brief the passenger.

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Original NASA ASRS Text

Title: AN F100 CREW, CRUISING AT FL290, EXPERIENCED A HYD FLUID LOSS, SPAWNING AN EMER AND A RETURN TO DEP ARPT.

Narrative: ENRTE FROM TUL TO ORD. DURING CRUISE APPROX 100 NM FROM STARTING THE ARR PROC, HYD SYS 1 QUANTITY DROPPED TO 35 PSI AND WE RECEIVED AN ALERT MESSAGE. BECAUSE OF THE LOSS OF NOSEWHEEL STEERING, SPD BRAKES AND THRUST REVERSERS, WE ELECTED TO RETURN TO TUL RATHER THAN CONTINUE TO ORD WHERE THERE WAS A WET RWY, LOW CEILINGS, POTENTIAL FOR STRONG XWINDS AND SEVERE TSTMS. THE EMER WAS CONCLUDED SUCCESSFULLY WITH A SAFE LNDG AT TUL. SUPPLEMENTAL INFO FROM ACN 547010: I ELECTED TO DIVERT BACK TO TUL RATHER THAN CONTINUE TO ORD. THE RETURN TIME ENRTE TO TUL WAS USED TO PLAN FOR THE EMER APCH AND LNDG, COORDINATE WITH DISPATCH, TUL APCH, TWR, EMER MAINT AND OPS. ALSO, THE RETURN CRUISE PROVIDED AN OPPORTUNITY TO BURN FUEL DOWN TO A LIGHT LNDG WT (APPROX 73,000 LBS) AND PROVIDED THE FLT ATTENDANTS ADEQUATE TIME TO BRIEF THE PAX.

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.