GA small aircraft on a night training flight causes a commuter small transport to go around from str...

Attributes
ACN	187047
Time
Date	199108
Day	Fri
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : sts
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 300
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	other
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent other landing other
Route In Use	approach : straight in
Flight Plan	IFR
Person 1
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Experience	flight time last 90 days : 28 flight time total : 28 flight time type : 28
ASRS Report	187047
Person 2
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi pilot : commercial
Experience	flight time last 90 days : 160 flight time total : 1800 flight time type : 130
ASRS Report	187045
Events
Anomaly	conflict : airborne less severe non adherence : published procedure other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I was doing my first training flight at night at the sonoma county airport with my instructor. We were performing touch and goes on runway 14, all the while announcing all turns. Upon my second takeoff I noticed planes in the distance (to the south) that were probably inbound for landing. After announcing left crosswind and left downwind and coming abeam the tower a pilot announced an 11 mi final for runway 32. I then again announced left downwind for runway 14. I got no response. After announcing left base the other pilot announced a 6 mi final. Very soon thereafter I announced a short final runway 14 touch and go and that I had traffic in sight and felt I could avoid. After takeoff I noticed the plane breaking off for runway 14 so I was then told to keep a standard left pattern. At this point the other pilot asked why I didn't announce my intentions. I then responded that I had done so 3 times. He asked again. At that point I realized we hadn't been transmitting. We then switched to the hand- held. My instructor announced what we had been doing and there was no further conversation. I then departed the pattern at left downwind to give him and the other commuter time to land. I feel we made every effort to avoid any type of incident and it is unfortunate that my intercom wasn't working properly.

Original NASA ASRS Text

Title: GA SMA ON A NIGHT TRAINING FLT CAUSES A COMMUTER SMT TO GAR FROM STRAIGHT IN APCH TO OPPOSITE DIRECTION RWY.

Narrative: I WAS DOING MY FIRST TRAINING FLT AT NIGHT AT THE SONOMA COUNTY ARPT WITH MY INSTRUCTOR. WE WERE PERFORMING TOUCH AND GOES ON RWY 14, ALL THE WHILE ANNOUNCING ALL TURNS. UPON MY SECOND TKOF I NOTICED PLANES IN THE DISTANCE (TO THE S) THAT WERE PROBABLY INBOUND FOR LNDG. AFTER ANNOUNCING L XWIND AND L DOWNWIND AND COMING ABEAM THE TWR A PLT ANNOUNCED AN 11 MI FINAL FOR RWY 32. I THEN AGAIN ANNOUNCED L DOWNWIND FOR RWY 14. I GOT NO RESPONSE. AFTER ANNOUNCING L BASE THE OTHER PLT ANNOUNCED A 6 MI FINAL. VERY SOON THEREAFTER I ANNOUNCED A SHORT FINAL RWY 14 TOUCH AND GO AND THAT I HAD TFC IN SIGHT AND FELT I COULD AVOID. AFTER TKOF I NOTICED THE PLANE BREAKING OFF FOR RWY 14 SO I WAS THEN TOLD TO KEEP A STANDARD L PATTERN. AT THIS POINT THE OTHER PLT ASKED WHY I DIDN'T ANNOUNCE MY INTENTIONS. I THEN RESPONDED THAT I HAD DONE SO 3 TIMES. HE ASKED AGAIN. AT THAT POINT I REALIZED WE HADN'T BEEN TRANSMITTING. WE THEN SWITCHED TO THE HAND- HELD. MY INSTRUCTOR ANNOUNCED WHAT WE HAD BEEN DOING AND THERE WAS NO FURTHER CONVERSATION. I THEN DEPARTED THE PATTERN AT L DOWNWIND TO GIVE HIM AND THE OTHER COMMUTER TIME TO LAND. I FEEL WE MADE EVERY EFFORT TO AVOID ANY TYPE OF INCIDENT AND IT IS UNFORTUNATE THAT MY INTERCOM WASN'T WORKING PROPERLY.

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.

GA small aircraft on a night training flight causes a commuter small transport to go around from straight in approach to opposite direction runway.