Narrative:

At approximately XA30 on sep/xa/00, I was returning from lvk airport to my home base of mhr. At 9.5 (GPS) NM south from mhr, I called mhr tower and informed them I was 9.5 mi south with the ATIS, inbound for landing. I was instructed to report base leg 'over the highway' for landing on runway 22L. I acknowledged to report base leg for runway 22L and continued a descent from my en route altitude of 2500 ft to the pattern altitude of 1000 ft MSL at mhr. Both my landing light and taxi lights were on at all times during my descent from 9.5 mi to the airport. While 7 mi out, flying a straight line from the south toward a left base leg entry, I noticed an air carrier B727 cargo jet taxiing toward runway 22. When I was about 5.5 GPS NM from the airport, the tower released the B727 for takeoff. Mhr tower did not notify the air carrier B727 of my inbound status. Following their usual departure procedure from mhr, the B727, once airborne, started a left climbing turn. I flashed my landing light to alert the B727 of my position, as the B727 was turning toward me as I continued my straight line path toward the base leg entry. The B727 continued to turn toward me as it climbed out and passed just above and slightly behind me. The pilot in the B727, when about 1.5 mi from me, asked the tower if they were talking 'to the aircraft just south of the airport.' I did not hear the tower's reply. I then realized that the B727 saw me, however, he just kept turning toward me. I keyed my microphone and immediately announced my altitude of 1500 ft. The B727 pilot informed the tower that they were at 1700 ft and that 'I had just gone under them' by 200 ft. The tower then told me they thought I had been north and was to report a right base over highway 50. I reiterated my original radio call that I had been 9.5 mi south. The rest of the descent and landing were uneventful.

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Original NASA ASRS Text

Title: C150 AND A B727 HAD LESS THAN LEGAL SPACING AT MHR CLASS D AIRSPACE.

Narrative: AT APPROX XA30 ON SEP/XA/00, I WAS RETURNING FROM LVK ARPT TO MY HOME BASE OF MHR. AT 9.5 (GPS) NM S FROM MHR, I CALLED MHR TWR AND INFORMED THEM I WAS 9.5 MI S WITH THE ATIS, INBOUND FOR LNDG. I WAS INSTRUCTED TO RPT BASE LEG 'OVER THE HWY' FOR LNDG ON RWY 22L. I ACKNOWLEDGED TO RPT BASE LEG FOR RWY 22L AND CONTINUED A DSCNT FROM MY ENRTE ALT OF 2500 FT TO THE PATTERN ALT OF 1000 FT MSL AT MHR. BOTH MY LNDG LIGHT AND TAXI LIGHTS WERE ON AT ALL TIMES DURING MY DSCNT FROM 9.5 MI TO THE ARPT. WHILE 7 MI OUT, FLYING A STRAIGHT LINE FROM THE S TOWARD A L BASE LEG ENTRY, I NOTICED AN ACR B727 CARGO JET TAXIING TOWARD RWY 22. WHEN I WAS ABOUT 5.5 GPS NM FROM THE ARPT, THE TWR RELEASED THE B727 FOR TKOF. MHR TWR DID NOT NOTIFY THE ACR B727 OF MY INBOUND STATUS. FOLLOWING THEIR USUAL DEP PROC FROM MHR, THE B727, ONCE AIRBORNE, STARTED A L CLBING TURN. I FLASHED MY LNDG LIGHT TO ALERT THE B727 OF MY POS, AS THE B727 WAS TURNING TOWARD ME AS I CONTINUED MY STRAIGHT LINE PATH TOWARD THE BASE LEG ENTRY. THE B727 CONTINUED TO TURN TOWARD ME AS IT CLBED OUT AND PASSED JUST ABOVE AND SLIGHTLY BEHIND ME. THE PLT IN THE B727, WHEN ABOUT 1.5 MI FROM ME, ASKED THE TWR IF THEY WERE TALKING 'TO THE ACFT JUST S OF THE ARPT.' I DID NOT HEAR THE TWR'S REPLY. I THEN REALIZED THAT THE B727 SAW ME, HOWEVER, HE JUST KEPT TURNING TOWARD ME. I KEYED MY MIKE AND IMMEDIATELY ANNOUNCED MY ALT OF 1500 FT. THE B727 PLT INFORMED THE TWR THAT THEY WERE AT 1700 FT AND THAT 'I HAD JUST GONE UNDER THEM' BY 200 FT. THE TWR THEN TOLD ME THEY THOUGHT I HAD BEEN N AND WAS TO RPT A R BASE OVER HWY 50. I REITERATED MY ORIGINAL RADIO CALL THAT I HAD BEEN 9.5 MI S. THE REST OF THE DSCNT AND LNDG WERE UNEVENTFUL.

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.