Narrative:

Tulsa riverside (rvs) and tulsa international (tul) airports have an LOA that all IFR departures off runways 1L and 1R are to maintain 2500 ft MSL and expect requested altitude 10 mins after departure. Additionally they are all given a 320 degree heading. 13 mi northwest of rvs; there is an antenna with an MVA of 3100 ft MSL for a 5 NM radius. The 320 degree heading aims departures directly at the antenna. Departures must be given an additional turn or climb prior to 8 mi out. Even if the departure is only doing 100 KTS; it will be too close to that antenna before the 10 min (NORDO) altitude restr. Today; an aircraft departed runway 1L on the above heading and altitude per the LOA. Upon departing; the radar tag for the aircraft did not automatic acquire. A radar target appeared; but had a mode C altitude indication of FL270. Unable to positively identify the radar target as the aircraft. I issued the current altimeter and advised the pilot of the possible discrepancy. The pilot acknowledged that his mode C was not correct. I called tul to advise them of the aircraft's position; altitude; and mode C problem. The controller at tul told me to 'stand by.' not having the authority/authorized to climb or turn the departure without permission from tul; this allowed the aircraft to penetrate the 5 mi safety zone of the antenna. Contributing factors: pilot departing with faulty transponder. Poor procedure of aiming aircraft at a known obstacle at an altitude that is below the MVA. Tul controller should have immediately issued a turn or climb rather than a standby.

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Original NASA ASRS Text

Title: RVS CTLR DESCRIBED OPERROR WHEN DEP ENTERED MVA AREA BELOW REQUIRED ALT.

Narrative: TULSA RIVERSIDE (RVS) AND TULSA INTL (TUL) ARPTS HAVE AN LOA THAT ALL IFR DEPS OFF RWYS 1L AND 1R ARE TO MAINTAIN 2500 FT MSL AND EXPECT REQUESTED ALT 10 MINS AFTER DEP. ADDITIONALLY THEY ARE ALL GIVEN A 320 DEG HDG. 13 MI NW OF RVS; THERE IS AN ANTENNA WITH AN MVA OF 3100 FT MSL FOR A 5 NM RADIUS. THE 320 DEG HDG AIMS DEPS DIRECTLY AT THE ANTENNA. DEPS MUST BE GIVEN AN ADDITIONAL TURN OR CLB PRIOR TO 8 MI OUT. EVEN IF THE DEP IS ONLY DOING 100 KTS; IT WILL BE TOO CLOSE TO THAT ANTENNA BEFORE THE 10 MIN (NORDO) ALT RESTR. TODAY; AN ACFT DEPARTED RWY 1L ON THE ABOVE HDG AND ALT PER THE LOA. UPON DEPARTING; THE RADAR TAG FOR THE ACFT DID NOT AUTO ACQUIRE. A RADAR TARGET APPEARED; BUT HAD A MODE C ALT INDICATION OF FL270. UNABLE TO POSITIVELY IDENT THE RADAR TARGET AS THE ACFT. I ISSUED THE CURRENT ALTIMETER AND ADVISED THE PLT OF THE POSSIBLE DISCREPANCY. THE PLT ACKNOWLEDGED THAT HIS MODE C WAS NOT CORRECT. I CALLED TUL TO ADVISE THEM OF THE ACFT'S POS; ALT; AND MODE C PROB. THE CTLR AT TUL TOLD ME TO 'STAND BY.' NOT HAVING THE AUTH TO CLB OR TURN THE DEP WITHOUT PERMISSION FROM TUL; THIS ALLOWED THE ACFT TO PENETRATE THE 5 MI SAFETY ZONE OF THE ANTENNA. CONTRIBUTING FACTORS: PLT DEPARTING WITH FAULTY XPONDER. POOR PROC OF AIMING ACFT AT A KNOWN OBSTACLE AT AN ALT THAT IS BELOW THE MVA. TUL CTLR SHOULD HAVE IMMEDIATELY ISSUED A TURN OR CLB RATHER THAN A STANDBY.

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.