Narrative:

I issued an IFR clearance to the pilot. It was what we refer to as a local IFR; which means the aircraft will be landing in the same terminal airspace (within 50 mi). The pilot filed for 2000 ft as a final altitude. My local LOA is that local IFR flts shall be given 3000 ft. I issued 2000 ft to the pilot for his final altitude. Since this aircraft is a local IFR flight; his requested altitude is not displayed on the radar; rather the 3 letter identify of the destination airport. The aircraft was vectored out of our airspace in the correct departure corridor and xferred to the radar departure controller. The departure controller was busy and did not have time to verify the aircraft's altitude or adjust his heading to avoid some antennas with an MSA of 3000 ft. So the aircraft lost separation with the obstacle. The pilot did; fortunately; make it past the antennas safely. The best way to have avoided this situation would have been for me to have issued the proper altitude.

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Original NASA ASRS Text

Title: HOU CLRNC DELIVERY CTLR EXPERIENCED OPERROR WHEN ISSUING WRONG LOA ALT WHICH WAS BELOW OBSTRUCTION CLRNC REQUIREMENTS.

Narrative: I ISSUED AN IFR CLRNC TO THE PLT. IT WAS WHAT WE REFER TO AS A LCL IFR; WHICH MEANS THE ACFT WILL BE LNDG IN THE SAME TERMINAL AIRSPACE (WITHIN 50 MI). THE PLT FILED FOR 2000 FT AS A FINAL ALT. MY LCL LOA IS THAT LCL IFR FLTS SHALL BE GIVEN 3000 FT. I ISSUED 2000 FT TO THE PLT FOR HIS FINAL ALT. SINCE THIS ACFT IS A LCL IFR FLT; HIS REQUESTED ALT IS NOT DISPLAYED ON THE RADAR; RATHER THE 3 LETTER IDENT OF THE DEST ARPT. THE ACFT WAS VECTORED OUT OF OUR AIRSPACE IN THE CORRECT DEP CORRIDOR AND XFERRED TO THE RADAR DEP CTLR. THE DEP CTLR WAS BUSY AND DID NOT HAVE TIME TO VERIFY THE ACFT'S ALT OR ADJUST HIS HDG TO AVOID SOME ANTENNAS WITH AN MSA OF 3000 FT. SO THE ACFT LOST SEPARATION WITH THE OBSTACLE. THE PLT DID; FORTUNATELY; MAKE IT PAST THE ANTENNAS SAFELY. THE BEST WAY TO HAVE AVOIDED THIS SITUATION WOULD HAVE BEEN FOR ME TO HAVE ISSUED THE PROPER ALT.

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.