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Traffic pattern conflict due to non adherence to ATC instruction and lack of tower controller vigilance.
| Attributes | |
| ACN | 177447 |
| Time | |
| Date | 199105 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sat |
| State Reference | TX |
| Altitude | msl bound lower : 1800 msl bound upper : 1900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : sat |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent : approach other |
| Flight Plan | None |
| Aircraft 2 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial |
| Experience | flight time last 90 days : 120 flight time total : 480 flight time type : 40 |
| ASRS Report | 177447 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : nmac non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Pilot Deviation |
Narrative:
After being handed off to the sat tower, I was given a heading for base leg (left) to runway 03. 3 airliners were on the ground--an small aircraft was #1 to land, I was #2 and another small aircraft was #3 to land. I was told to steer 10 more degrees right to square off my base and I expected a short final. The first small aircraft landed and the airliner was told to expect an immediate takeoff after the first small aircraft cleared off the runway. I asked the tower if he wanted me to do a 270 degree turn to the right. He said, 'no,' and cleared me to land. The air carrier taxied into position as the first small aircraft turned off. I turned final as the #3 small aircraft Y flew over my aircraft and called no joy. There were still 2 more small aircraft aircraft inbound. I am still uncertain as to what was going on, except aircraft were not being spaced well enough apart if an small aircraft Y runs up on top of me (small aircraft X) while I'm turning to final. I was told to keep my speed up, but the air carrier jet was not moving and the first small aircraft was just clearing the runway.
Original NASA ASRS Text
Title: TRAFFIC PATTERN CONFLICT DUE TO NON ADHERENCE TO ATC INSTRUCTION AND LACK OF TWR CTLR VIGILANCE.
Narrative: AFTER BEING HANDED OFF TO THE SAT TWR, I WAS GIVEN A HDG FOR BASE LEG (LEFT) TO RWY 03. 3 AIRLINERS WERE ON THE GND--AN SMA WAS #1 TO LAND, I WAS #2 AND ANOTHER SMA WAS #3 TO LAND. I WAS TOLD TO STEER 10 MORE DEGS RIGHT TO SQUARE OFF MY BASE AND I EXPECTED A SHORT FINAL. THE FIRST SMA LANDED AND THE AIRLINER WAS TOLD TO EXPECT AN IMMEDIATE TKOF AFTER THE FIRST SMA CLRED OFF THE RWY. I ASKED THE TWR IF HE WANTED ME TO DO A 270 DEG TURN TO THE RIGHT. HE SAID, 'NO,' AND CLRED ME TO LAND. THE ACR TAXIED INTO POS AS THE FIRST SMA TURNED OFF. I TURNED FINAL AS THE #3 SMA Y FLEW OVER MY ACFT AND CALLED NO JOY. THERE WERE STILL 2 MORE SMA ACFT INBND. I AM STILL UNCERTAIN AS TO WHAT WAS GOING ON, EXCEPT ACFT WERE NOT BEING SPACED WELL ENOUGH APART IF AN SMA Y RUNS UP ON TOP OF ME (SMA X) WHILE I'M TURNING TO FINAL. I WAS TOLD TO KEEP MY SPD UP, BUT THE ACR JET WAS NOT MOVING AND THE FIRST SMA WAS JUST CLRING THE RWY.
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.