|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||airport : zzzz.airport|
|Operator||common carrier : air carrier|
|Make Model Name||B747-400|
|Operating Under FAR Part||Part 121|
|Flight Phase||descent : approach|
landing : missed approach
|Route In Use||approach : instrument precision|
|Affiliation||company : air carrier|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : multi engine|
pilot : cfi
pilot : atp
|Experience||flight time last 90 days : 100|
flight time total : 7500
flight time type : 1400
|Anomaly||aircraft equipment problem : critical|
other anomaly other
other anomaly other
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : declared emergency|
flight crew : diverted to another airport
flight crew : landed in emergency condition
Flying to ZZZZ1; had to divert to ZZZZ. Shot 3 approachs to ILS DME Y runway xxr. First went missed due to no course alive or navigation capture. Second approach false course alive occurred but no navigation capture. First officer was flying pilot and saw a runway. It was runway 15R. As soon as we saw that it was not runway xxl; we reported it to the controller and went missed. Emergencys declared for fuel and radio problems. Third approach was vector to finals; never saw runway; went missed. Diverted to ZZZZ2 and landed there. After landing; APU fire warning occurred. Used emergency procedures and parked aircraft. Later learned from maintenance that radios were loose in racks and connections needed cleaning. After maintenance; radios worked fine.
Original NASA ASRS Text
Title: B747 SUFFERS MULTIPLE RADIO ANOMALIES DURING ILS APCHES TO A FOREIGN ARPT. AFTER MULTIPLE UNSUCCESSFUL APCHES DIVERT TO ANOTHER ARPT UNDER EMERGENCY CONDITIONS AND LAND. DISCOVER RADIOS LOOSE IN RACKS AND ELECTRICAL CONNECTIONS IN NEED OF CLEANING.
Narrative: FLYING TO ZZZZ1; HAD TO DIVERT TO ZZZZ. SHOT 3 APCHS TO ILS DME Y RWY XXR. FIRST WENT MISSED DUE TO NO COURSE ALIVE OR NAV CAPTURE. SECOND APCH FALSE COURSE ALIVE OCCURRED BUT NO NAV CAPTURE. FO WAS FLYING PLT AND SAW A RWY. IT WAS RWY 15R. AS SOON AS WE SAW THAT IT WAS NOT RWY XXL; WE RPTED IT TO THE CTLR AND WENT MISSED. EMERS DECLARED FOR FUEL AND RADIO PROBS. THIRD APCH WAS VECTOR TO FINALS; NEVER SAW RWY; WENT MISSED. DIVERTED TO ZZZZ2 AND LANDED THERE. AFTER LNDG; APU FIRE WARNING OCCURRED. USED EMER PROCS AND PARKED ACFT. LATER LEARNED FROM MAINT THAT RADIOS WERE LOOSE IN RACKS AND CONNECTIONS NEEDED CLEANING. AFTER MAINT; RADIOS WORKED FINE.
Data retrieved from NASA's ASRS site as of May 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.