C172 pilot may have entered a service road inadvertently while taxiing.

Attributes
ACN	413820
Time
Date	199809
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sjc
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	ground other : taxi
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Flight Phase	ground : holding
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 1300 flight time type : 20
ASRS Report	413820
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other
Situations
Airport	procedure or policy : unspecified

Narrative:

We were cleared to taxi to parking via taxiway Y. But many jets were in line to take off on runway 30L. We were holding behind a jet. Ground instructed us to use taxiway Z and if there was enough room to go around an air carrier jet, which we started to do, but saw that we could go on the service road. Before this incident occurred, we went back to hold behind the air carrier jet. We did not go on the service road but it could have been a chain of events of taxiway accident with other aircraft and/or vehicle. We have tried to follow ground instruction to accommodate the busy traffic. The corrective action was to avoid service road and to hold just behind jet.

Original NASA ASRS Text

Title: C172 PLT MAY HAVE ENTERED A SVC ROAD INADVERTENTLY WHILE TAXIING.

Narrative: WE WERE CLRED TO TAXI TO PARKING VIA TXWY Y. BUT MANY JETS WERE IN LINE TO TAKE OFF ON RWY 30L. WE WERE HOLDING BEHIND A JET. GND INSTRUCTED US TO USE TXWY Z AND IF THERE WAS ENOUGH ROOM TO GO AROUND AN ACR JET, WHICH WE STARTED TO DO, BUT SAW THAT WE COULD GO ON THE SVC ROAD. BEFORE THIS INCIDENT OCCURRED, WE WENT BACK TO HOLD BEHIND THE ACR JET. WE DID NOT GO ON THE SVC ROAD BUT IT COULD HAVE BEEN A CHAIN OF EVENTS OF TXWY ACCIDENT WITH OTHER ACFT AND/OR VEHICLE. WE HAVE TRIED TO FOLLOW GND INSTRUCTION TO ACCOMMODATE THE BUSY TFC. THE CORRECTIVE ACTION WAS TO AVOID SVC ROAD AND TO HOLD JUST BEHIND JET.

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.