 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A stuck microphone on a crj prevents takeoff clearance being received while in position on the runway requiring a go around to be issued for aircraft on final at cvg.
| Attributes | |
| ACN | 638265 |
| Time | |
| Date | 200411 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cvg.airport |
| State Reference | OH |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Rain |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : atl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : position and hold |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : cvg.tower |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : vacating altitude landing : go around |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 205 flight time total : 8800 flight time type : 3100 |
| ASRS Report | 638265 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : less severe incursion : runway non adherence : clearance |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : separated traffic controller : issued new clearance flight crew : overcame equipment problem |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Aircraft |
Narrative:
We were cleared into position and hold on runway 36R as traffic touched down and another aircraft was on a 4 mi final. While in position we saw the landing aircraft exit the runway, but we received no takeoff clearance. After about 5 seconds, I transmitted on tower frequency that we were still in position. Several seconds later we heard the aircraft on approach ask for a radio check. He was told to go around. Tower informed us that we had had a stuck microphone switch. We were then cleared for takeoff. After departure, repeated checks of the first officer's push-to-talk switch revealed no problems. On the following leg, however, the first officer did notice a momentary sticking on the push-to-talk switch. Maintenance was notified and the switch was replaced. My concern, naturally, is the reduced separation caused by my failing to notice the push-to-talk switch. Upon realizing that there may have been a communications problem, this should have been the first item I checked.
Original NASA ASRS Text
Title: A STUCK MIKE ON A CRJ PREVENTS TKOF CLRNC BEING RECEIVED WHILE IN POS ON THE RWY REQUIRING A GAR TO BE ISSUED FOR ACFT ON FINAL AT CVG.
Narrative: WE WERE CLRED INTO POS AND HOLD ON RWY 36R AS TFC TOUCHED DOWN AND ANOTHER ACFT WAS ON A 4 MI FINAL. WHILE IN POS WE SAW THE LNDG ACFT EXIT THE RWY, BUT WE RECEIVED NO TKOF CLRNC. AFTER ABOUT 5 SECONDS, I XMITTED ON TWR FREQ THAT WE WERE STILL IN POS. SEVERAL SECONDS LATER WE HEARD THE ACFT ON APCH ASK FOR A RADIO CHK. HE WAS TOLD TO GO AROUND. TWR INFORMED US THAT WE HAD HAD A STUCK MIKE SWITCH. WE WERE THEN CLRED FOR TKOF. AFTER DEP, REPEATED CHKS OF THE FO'S PUSH-TO-TALK SWITCH REVEALED NO PROBS. ON THE FOLLOWING LEG, HOWEVER, THE FO DID NOTICE A MOMENTARY STICKING ON THE PUSH-TO-TALK SWITCH. MAINT WAS NOTIFIED AND THE SWITCH WAS REPLACED. MY CONCERN, NATURALLY, IS THE REDUCED SEPARATION CAUSED BY MY FAILING TO NOTICE THE PUSH-TO-TALK SWITCH. UPON REALIZING THAT THERE MAY HAVE BEEN A COMS PROB, THIS SHOULD HAVE BEEN THE FIRST ITEM I CHKED.
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.