Air carrier making a go around came close to a departing aircraft.

Attributes
ACN	114713
Time
Date	198906
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	msl bound lower : 600 msl bound upper : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sjc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach landing : go around
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	observation : observer
Qualification	controller : radar
Experience	controller military : 11 controller non radar : 19 controller radar : 10 controller supervisory : 7
ASRS Report	114713
Person 2
Affiliation	government : faa
Function	oversight : supervisor
Qualification	controller : non radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

1) at 1 1/2 mi final air carrier X elected to execute a go around, reason for go around not stated. 2) at same time air carrier Y started takeoff roll on same runway. 3) controller initiated transmission to cancel takeoff clearance. 4) shift area supervisor interrupted and directed controller to 'let him go'. 5) helicopter on left downwind instructed to descend immediately since air carrier X during its go around turned left 20 degree to avoid overflying air carrier Y on takeoff roll. 6) air carrier X instructed to turn back and overfly runway 30L at direction of area supervisor. 7) subsequent instruction issued to air carrier X to turn left heading 270 degree to provide separation between the 2 aircraft. High volume of aircraft in inner core of arsa. Prevention: cancel takeoff clearance of aircraft on runway to allow standard missed approach procedure until alternate instructions obtained from approach control. Factor causing dangerous situation: supervisor overriding controller's decision to cancel takeoff clearance of an air carrier departing on IFR flight plan with an air carrier overhead on missed approach, go around.

Original NASA ASRS Text

Title: ACR MAKING A GO AROUND CAME CLOSE TO A DEPARTING ACFT.

Narrative: 1) AT 1 1/2 MI FINAL ACR X ELECTED TO EXECUTE A GO AROUND, REASON FOR GO AROUND NOT STATED. 2) AT SAME TIME ACR Y STARTED TKOF ROLL ON SAME RWY. 3) CTLR INITIATED XMISSION TO CANCEL TKOF CLRNC. 4) SHIFT AREA SUPVR INTERRUPTED AND DIRECTED CTLR TO 'LET HIM GO'. 5) HELI ON LEFT DOWNWIND INSTRUCTED TO DSND IMMEDIATELY SINCE ACR X DURING ITS GO AROUND TURNED LEFT 20 DEG TO AVOID OVERFLYING ACR Y ON TKOF ROLL. 6) ACR X INSTRUCTED TO TURN BACK AND OVERFLY RWY 30L AT DIRECTION OF AREA SUPVR. 7) SUBSEQUENT INSTRUCTION ISSUED TO ACR X TO TURN LEFT HDG 270 DEG TO PROVIDE SEPARATION BETWEEN THE 2 ACFT. HIGH VOLUME OF ACFT IN INNER CORE OF ARSA. PREVENTION: CANCEL TKOF CLRNC OF ACFT ON RWY TO ALLOW STANDARD MISSED APCH PROC UNTIL ALTERNATE INSTRUCTIONS OBTAINED FROM APCH CTL. FACTOR CAUSING DANGEROUS SITUATION: SUPVR OVERRIDING CTLR'S DECISION TO CANCEL TKOF CLRNC OF AN AIR CARRIER DEPARTING ON IFR FLT PLAN WITH AN AIR CARRIER OVERHEAD ON MISSED APCH, GO AROUND.

Data retrieved from NASA's ASRS site as of August 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.