MTR crew picks up clearance meant for second MTR on different frequency. Controller missed readback.

Attributes
ACN	176594
Time
Date	199104
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pns
State Reference	FL
Altitude	msl bound lower : 1200 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : npa
Operator	other
Make Model Name	Military Trainer
Flight Phase	cruise other descent other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Military Trainer
Flight Phase	descent other
Person 1
Affiliation	government : military
Function	flight crew : captain oversight : pic
Qualification	pilot : military
Experience	flight time last 90 days : 150 flight time total : 8500 flight time type : 2000
ASRS Report	176594
Person 2
Affiliation	government : military
Function	flight crew : first officer
Qualification	pilot : military
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew Other
Miss Distance	horizontal : 3000 vertical : 300
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

MTR had completed a local radar navigation that departed npa at xx and landed npa at xx plus 4. We were radar vectors heading 100 degree at 5000' for a PAR full stop at npa. Approximately 0945 rkt 72 was cleared to descend to 1200' lt to 070 and slow to 170 KIAS. The student read back the clearance and we descended to 1200' and slowed to 170 KIAS. We were VMC. At 0950 the controller asked to confirm we were at 4000'. I replied we were at 1200'. We were cleared for immediate left hand 360 degree turn to 070 and climb to 2200'. We complied and continued the approach. We contacted the navlo out of curiosity and were told that a pilot deviation was being filed because we were never cleared out of 5000'. The tape was played back and we read back a clearance to descend (turbo was on another frequency). The MTR 2 was closer to the station and his clearance read back blocked the last part of our readback so the controller missed the completion of our readback. Similar call signs are and have been a continuing problem at navy pensacola and other military installations. We were told that we were within 300' and a half mi of another aircraft when told to climb and turn. We were VMC and did not see the traffic.

Original NASA ASRS Text

Title: MTR CREW PICKS UP CLRNC MEANT FOR SECOND MTR ON DIFFERENT FREQ. CTLR MISSED READBACK.

Narrative: MTR HAD COMPLETED A LCL RADAR NAV THAT DEPARTED NPA AT XX AND LANDED NPA AT XX PLUS 4. WE WERE RADAR VECTORS HDG 100 DEG AT 5000' FOR A PAR FULL STOP AT NPA. APPROX 0945 RKT 72 WAS CLRED TO DSND TO 1200' LT TO 070 AND SLOW TO 170 KIAS. THE STUDENT READ BACK THE CLRNC AND WE DSNDED TO 1200' AND SLOWED TO 170 KIAS. WE WERE VMC. AT 0950 THE CTLR ASKED TO CONFIRM WE WERE AT 4000'. I REPLIED WE WERE AT 1200'. WE WERE CLRED FOR IMMEDIATE L HAND 360 DEG TURN TO 070 AND CLB TO 2200'. WE COMPLIED AND CONTINUED THE APCH. WE CONTACTED THE NAVLO OUT OF CURIOSITY AND WERE TOLD THAT A PLT DEV WAS BEING FILED BECAUSE WE WERE NEVER CLRED OUT OF 5000'. THE TAPE WAS PLAYED BACK AND WE READ BACK A CLRNC TO DSND (TURBO WAS ON ANOTHER FREQ). THE MTR 2 WAS CLOSER TO THE STATION AND HIS CLRNC READ BACK BLOCKED THE LAST PART OF OUR READBACK SO THE CTLR MISSED THE COMPLETION OF OUR READBACK. SIMILAR CALL SIGNS ARE AND HAVE BEEN A CONTINUING PROB AT NAVY PENSACOLA AND OTHER MIL INSTALLATIONS. WE WERE TOLD THAT WE WERE WITHIN 300' AND A HALF MI OF ANOTHER ACFT WHEN TOLD TO CLB AND TURN. WE WERE VMC AND DID NOT SEE THE TFC.

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.