<< >> NASA ASRS Report 754440, September 2007

Pao local controller described failed intrafac/interfacility coordination that resulted in airspace incursion and operational deviation.

Attributes
ACN	754440
Time
Date	200709
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : nuq.airport
State Reference	CA
Altitude	msl single value : 800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : pao.tower tower : cle.tower
Operator	general aviation : personal
Make Model Name	SR22
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern
Aircraft 2
Controlling Facilities	tower : nuq.tower
Operator	other
Make Model Name	Hercules (C-130)
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Person 1
Affiliation	government : faa
Function	controller : local instruction : instructor
Qualification	controller : radar
Experience	controller military : 3 controller non radar : 8 controller radar : 5
ASRS Report	754440
Events
Anomaly	airspace violation : entry conflict : airborne less severe non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Miss Distance	horizontal : 2000 vertical : 500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation Intra Facility Coordination Failure

Narrative:

Training was in progress on local and ground. Traffic volume was heavy. I sequenced aircraft X to follow traffic straight in from nuq. In my opinion the aircraft would pass near the amphitheatre as coordinated with moffett tower. Tapes indicate the pilot said call my base. I did not hear or acknowledge that request. During this time I heard the controller in charge telling ground to get hangar extensions. I never heard anything further regarding extensions. Aircraft X did not see the traffic to follow and passed the amphitheatre without my notice. I observed aircraft X at the hangar as a C130 was lifting from moffett. I told the aircraft to turn base but we stepped on each other causing aircraft X to fly further into nuq airspace. I found out after the fact that nuq denied further airspace extensions due to departing C130. I believe poor coordination by inside palo alto tower was a contributing factor.

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Original NASA ASRS Text

Title: PAO LCL CTLR DESCRIBED FAILED INTRAFAC/INTERFAC COORD THAT RESULTED IN AIRSPACE INCURSION AND OPDEV.

Narrative: TRAINING WAS IN PROGRESS ON LCL AND GND. TFC VOLUME WAS HVY. I SEQUENCED ACFT X TO FOLLOW TFC STRAIGHT IN FROM NUQ. IN MY OPINION THE ACFT WOULD PASS NEAR THE AMPHITHEATRE AS COORDINATED WITH MOFFETT TWR. TAPES INDICATE THE PLT SAID CALL MY BASE. I DID NOT HEAR OR ACKNOWLEDGE THAT REQUEST. DURING THIS TIME I HEARD THE CIC TELLING GND TO GET HANGAR EXTENSIONS. I NEVER HEARD ANYTHING FURTHER REGARDING EXTENSIONS. ACFT X DID NOT SEE THE TFC TO FOLLOW AND PASSED THE AMPHITHEATRE WITHOUT MY NOTICE. I OBSERVED ACFT X AT THE HANGAR AS A C130 WAS LIFTING FROM MOFFETT. I TOLD THE ACFT TO TURN BASE BUT WE STEPPED ON EACH OTHER CAUSING ACFT X TO FLY FURTHER INTO NUQ AIRSPACE. I FOUND OUT AFTER THE FACT THAT NUQ DENIED FURTHER AIRSPACE EXTENSIONS DUE TO DEPARTING C130. I BELIEVE POOR COORD BY INSIDE PALO ALTO TWR WAS A CONTRIBUTING FACTOR.

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.