B737 flight crew is issued holding instructions arriving ZZZ after radar outage. Radar recovers; then fails again; causing flight crew to declare minimum fuel and divert.

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Attributes
ACN	761138
Time
Date	200711
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	761138
Events
Anomaly	other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport
Supplementary
Problem Areas	ATC Facility Company
Primary Problem	ATC Facility

Narrative:

After passing intersection on arrival at 10000 ft; issued clearance back to intersection to hold; efc XA20; due to radar failure at ZZZ. At XA15 it appeared they were taking arrs; then radar failed again with no time of reinstatement. Got new efc XA40. After communication with dispatch and company; diverted to ZZZ1. Center very busy and vectored us out over water; tried to get their attention. Got in contact with approach. Got vectors to ZZZ1. Called minimum fuel at XA33 with 4600 pounds on board; landed with 3900 pounds on board. (Dispatch reserve fuel 4071 pounds.) suggestions: more contingency fuel on aircraft.

Original NASA ASRS Text

Title: B737 FLT CREW IS ISSUED HOLDING INSTRUCTIONS ARRIVING ZZZ AFTER RADAR OUTAGE. RADAR RECOVERS; THEN FAILS AGAIN; CAUSING FLT CREW TO DECLARE MINIMUM FUEL AND DIVERT.

Narrative: AFTER PASSING INTXN ON ARR AT 10000 FT; ISSUED CLRNC BACK TO INTXN TO HOLD; EFC XA20; DUE TO RADAR FAILURE AT ZZZ. AT XA15 IT APPEARED THEY WERE TAKING ARRS; THEN RADAR FAILED AGAIN WITH NO TIME OF REINSTATEMENT. GOT NEW EFC XA40. AFTER COM WITH DISPATCH AND COMPANY; DIVERTED TO ZZZ1. CTR VERY BUSY AND VECTORED US OUT OVER WATER; TRIED TO GET THEIR ATTN. GOT IN CONTACT WITH APCH. GOT VECTORS TO ZZZ1. CALLED MINIMUM FUEL AT XA33 WITH 4600 LBS ON BOARD; LANDED WITH 3900 LBS ON BOARD. (DISPATCH RESERVE FUEL 4071 LBS.) SUGGESTIONS: MORE CONTINGENCY FUEL ON ACFT.

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.