Fgt X aircraft equipment problem hydrolic failure. Emergency descent from assigned altitude.

Attributes
ACN	178020
Time
Date	199105
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : roa
State Reference	VA
Altitude	msl bound lower : 25000 msl bound upper : 26000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc
Operator	other
Make Model Name	Fighter
Flight Phase	descent other other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 7 controller radar : 5
ASRS Report	178020
Person 2
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : developmental controller : non radar
ASRS Report	178107
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : declared emergency other
Consequence	Other
Miss Distance	horizontal : 30000 vertical : 1000
Supplementary
Primary Problem	Aircraft

Narrative:

Fgt X en route to ntu experienced hydraulic failure and declared an emergency. He needed to land at the nearest airport, roa, va. He started to descend on his own from his assigned altitude, FL270. I asked him if he could maintain FL260 and he said he could. He passed near air carrier Y, pit to rdu, at FL250. The aircraft passed by about 5 mi and 1000'. Fgt X later landed roa airport.

Original NASA ASRS Text

Title: FGT X ACFT EQUIPMENT PROBLEM HYDROLIC FAILURE. EMERGENCY DESCENT FROM ASSIGNED ALT.

Narrative: FGT X ENRTE TO NTU EXPERIENCED HYD FAILURE AND DECLARED AN EMER. HE NEEDED TO LAND AT THE NEAREST ARPT, ROA, VA. HE STARTED TO DSND ON HIS OWN FROM HIS ASSIGNED ALT, FL270. I ASKED HIM IF HE COULD MAINTAIN FL260 AND HE SAID HE COULD. HE PASSED NEAR ACR Y, PIT TO RDU, AT FL250. THE ACFT PASSED BY ABOUT 5 MI AND 1000'. FGT X LATER LANDED ROA ARPT.

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.