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B767-300 developed hydraulic filter leak en route. Pumps turned off with slight amount of fluid remaining. Emergency declared. Returned for landing.
| Attributes | |
| ACN | 643629 |
| Time | |
| Date | 200501 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 130 flight time total : 15100 flight time type : 2500 |
| ASRS Report | 643629 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : eicas |
| Resolutory Action | flight crew : declared emergency flight crew : landed in emergency condition |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
Return to departure airport (ZZZ) due hydraulic leak. Departed ZZZ for ZZZ1 at XA00; VFR day. 10 mins after reaching cruise altitude of FL340; 30 mins after takeoff; and approximately 126 NM southwest of ZZZ; the right hydraulic quantity warning light came on. Status page showed quantity at 67% and dropping. Shut off right hydraulic pumps per flight manual and quantity stabilized at 37% (31% on block-in). Declared emergency due hydraulic system failure and set up for return to ZZZ. No fuel to dump from center tank so planned for overweight landing at 325000 pounds -- 25000 pounds over structural maximum landing weight of 300000 pounds. Requested and got ZZZ runway 25L; 11096 ft. Landed with 5 KT tailwind (090 degrees at 5 KTS). Very smooth touchdown; rolled it in; no stress on airframe. Right reverser inoperative; used whole runway; applied medium braking at 90 KTS. Brake temperatures moderate at parking; maximum '5' on a scale of 1 to 9. Coordinated with dispatch for emergency equipment. They checked our external condition after landing and found things normal. Leak was at right engine hydraulic case drain and press filler.
Original NASA ASRS Text
Title: B767-300 DEVELOPED HYD FILTER LEAK ENRTE. PUMPS TURNED OFF WITH SLIGHT AMOUNT OF FLUID REMAINING. EMER DECLARED. RETURNED FOR LNDG.
Narrative: RETURN TO DEP ARPT (ZZZ) DUE HYD LEAK. DEPARTED ZZZ FOR ZZZ1 AT XA00; VFR DAY. 10 MINS AFTER REACHING CRUISE ALT OF FL340; 30 MINS AFTER TKOF; AND APPROX 126 NM SW OF ZZZ; THE R HYD QUANTITY WARNING LIGHT CAME ON. STATUS PAGE SHOWED QUANTITY AT 67% AND DROPPING. SHUT OFF R HYD PUMPS PER FLT MANUAL AND QUANTITY STABILIZED AT 37% (31% ON BLOCK-IN). DECLARED EMER DUE HYD SYS FAILURE AND SET UP FOR RETURN TO ZZZ. NO FUEL TO DUMP FROM CTR TANK SO PLANNED FOR OVERWT LNDG AT 325000 LBS -- 25000 LBS OVER STRUCTURAL MAX LNDG WT OF 300000 LBS. REQUESTED AND GOT ZZZ RWY 25L; 11096 FT. LANDED WITH 5 KT TAILWIND (090 DEGS AT 5 KTS). VERY SMOOTH TOUCHDOWN; ROLLED IT IN; NO STRESS ON AIRFRAME. R REVERSER INOP; USED WHOLE RWY; APPLIED MEDIUM BRAKING AT 90 KTS. BRAKE TEMPS MODERATE AT PARKING; MAX '5' ON A SCALE OF 1 TO 9. COORDINATED WITH DISPATCH FOR EMER EQUIP. THEY CHKED OUR EXTERNAL CONDITION AFTER LNDG AND FOUND THINGS NORMAL. LEAK WAS AT R ENG HYD CASE DRAIN AND PRESS FILLER.
Data retrieved from NASA's ASRS site as of January 2009 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.