DELAY EXECUTING AN 'IMMEDIATE' TKOF FORCES ANOTHER ACFT TO GAR.

Date: 1993-10 · Aircraft: Small Transport; Low Wing; 2 Turboprop Eng · Phase: takeoff

Anomalies: conflict-airborne-conflict|deviation-discrepancy-procedural-clearance|deviation-discrepancy-procedural-far

Synopsis

DELAY EXECUTING AN 'IMMEDIATE' TKOF FORCES ANOTHER ACFT TO GAR.

Narrative

I RECEIVED A CLRNC FOR IMMEDIATE TKOF ON RWY 14L USING THE FOLLOWING PHRASEOLOGY: 'ACFT IS CLRED FOR IMMEDIATE TKOF; SMA ON L BASE.' I LOOKED OUT THE COPLT'S SIDE WINDOW FOR THE TFC AND NOT SEEING THE SMA; ACCEPTED THE CLRNC AND TAXIED ONTO THE RWY; PAUSED BRIEFLY INTO POS TO SPOOL THE ENGS UP TO THE MINIMUM LEVEL; RELEASED THE BRAKES AND COMPLETED THE BAL OF THE TKOF. IT IS THE WAY I WAS TAUGHT TO FLY THE AIRPLANE AND IT IS ALSO THE METHOD THAT SCHOOL TEACHES. THIS IS A NORMAL PROC FOR ACFT. I WAS THE ONLY OCCUPANT OF THE ACFT AND WITH A RELATIVELY SMALL AMOUNT OF FUEL ON BOARD (HSI ONLY IS 122 NM FROM OMA) THE ACFT ACCELERATED VERY RAPIDLY. AT ABOUT THE POINT WHEN I REACHED 60 KTS OR SO; A DIFFERENT CTLR'S VOICE CAME ON THE RADIO AND ISSUED A GAR TO THE SMA. AFTER THE SMA RESPONDED AND EXECUTED THE GAR; THE CTLR CHIDED ME AND SUGGESTED THAT AN IMMEDIATE TKOF DOES NOT MEAN STOPPING ON THE RWY. ON MY DEP FROM HASTINGS; I TIMED THE SPOOL-UP PERIOD ON THE RWY AT LESS THAN 10 SECONDS. THE TWR CTLR MAY HAVE MISJUDGED THE ACTUAL LOCATION OF THE ACFT. THE TKOF CLRNC IMPLIED A POS SOMEWHERE ON A 'NORMAL' L BASE. FROM THE TIME THAT PASSED BTWN MY INITIAL CLRNC AND THE COMMAND TO GAR COULD NOT HAVE; EVEN UNDER THE MOST PESSIMISTIC CONDITIONS; EXCEEDED 30 SECONDS OR SO. GIVEN THE SPDS AT WHICH SMA USUALLY FLY; THIS IMPLIES THAT HE WAS EITHER MUCH CLOSER TO FINAL THAN BASE OR IT WAS A TIGHT PATTERN. A NORMAL PROC TO ME JUST MIGHT NOT BE A NORMAL PROC TO SOMEONE ELSE; TWR CTLR OR OTHERWISE.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.