Aircraft equipment problem hydraulic system partial failure.

Attributes
ACN	288747
Time
Date	199411
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sat
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sat
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	climbout : takeoff other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 13000
ASRS Report	288747
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	none taken : unable other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

B-727 regular scheduled commercial flight sat-mex. After takeoff gear handle to up position. #1 hydraulic low pressure light came on and pressure dropped to 500 psi/zero. Gear came up and pressure returned to normal. (That was an attention getter). Flaps selected to 5 degrees from 15 degrees. Now both #1 and #2 hydraulic low pressure lights come on and pressure again drops to between 500 to zero psi. Discussion between the crew at this point whether to continue to mex or return to sat. Return to sat decided on. Flaps still at 5 degrees. Flaps selected to 15 degrees, same hydraulic indications as mentioned above. Flaps selected to 25 degrees, same drop in pressure but returned to normal pressure after flaps got to the selected position. Gear handle selected down -- same hydraulic indications. Flaps to 30 degrees and uneventful landing made.

Original NASA ASRS Text

Title: ACFT EQUIP PROB HYD SYS PARTIAL FAILURE.

Narrative: B-727 REGULAR SCHEDULED COMMERCIAL FLT SAT-MEX. AFTER TKOF GEAR HANDLE TO UP POS. #1 HYD LOW PRESSURE LIGHT CAME ON AND PRESSURE DROPPED TO 500 PSI/ZERO. GEAR CAME UP AND PRESSURE RETURNED TO NORMAL. (THAT WAS AN ATTN GETTER). FLAPS SELECTED TO 5 DEGS FROM 15 DEGS. NOW BOTH #1 AND #2 HYD LOW PRESSURE LIGHTS COME ON AND PRESSURE AGAIN DROPS TO BTWN 500 TO ZERO PSI. DISCUSSION BTWN THE CREW AT THIS POINT WHETHER TO CONTINUE TO MEX OR RETURN TO SAT. RETURN TO SAT DECIDED ON. FLAPS STILL AT 5 DEGS. FLAPS SELECTED TO 15 DEGS, SAME HYD INDICATIONS AS MENTIONED ABOVE. FLAPS SELECTED TO 25 DEGS, SAME DROP IN PRESSURE BUT RETURNED TO NORMAL PRESSURE AFTER FLAPS GOT TO THE SELECTED POS. GEAR HANDLE SELECTED DOWN -- SAME HYD INDICATIONS. FLAPS TO 30 DEGS AND UNEVENTFUL LNDG MADE.

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.