Air carrier medium large transport flight crew changes to wrong frequency on prado 2 SID from ont.

Attributes
ACN	176367
Time
Date	199104
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : ont
State Reference	CA
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ont
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude climbout : takeoff
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 440 flight time total : 10000 flight time type : 875
ASRS Report	176367
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On departure from ont airport to ord the prado two SID was assigned. Five departure control frequencys are available. As we were to go ene frequency 119.65 was selected. After takeoff and while in a turn to pdz, departure control was contacted. While checking in, I noticed an aircraft Y at our 1-2 O'clock position, turning away from us. I asked departure control if they saw that aircraft. The response was 'yes why didn't anyone else tell you about him. Who were you talking to prior to me?' I responded, we had just left ont and went from tower to departure 119.65. He then said we were on the wrong frequency and the aircraft I questioned had been turned away from us. We should be on 135.4 which was for going ssw. True we did turn through south on our turn to pdz, but truely our route was east to northeast. I also question why there are frequency for nne, southwest, north, etc, if they are not intended for aircraft deparing on rtes in those directions. No evasive action was performed. No conflict occurred. No further comments were received and we proceeded to ord.

Original NASA ASRS Text

Title: ACR MLG FLC CHANGES TO WRONG FREQ ON PRADO 2 SID FROM ONT.

Narrative: ON DEP FROM ONT ARPT TO ORD THE PRADO TWO SID WAS ASSIGNED. FIVE DEP CTL FREQS ARE AVAILABLE. AS WE WERE TO GO ENE FREQ 119.65 WAS SELECTED. AFTER TKOF AND WHILE IN A TURN TO PDZ, DEP CTL WAS CONTACTED. WHILE CHKING IN, I NOTICED AN ACFT Y AT OUR 1-2 O'CLOCK POS, TURNING AWAY FROM US. I ASKED DEP CTL IF THEY SAW THAT ACFT. THE RESPONSE WAS 'YES WHY DIDN'T ANYONE ELSE TELL YOU ABOUT HIM. WHO WERE YOU TALKING TO PRIOR TO ME?' I RESPONDED, WE HAD JUST L ONT AND WENT FROM TWR TO DEP 119.65. HE THEN SAID WE WERE ON THE WRONG FREQ AND THE ACFT I QUESTIONED HAD BEEN TURNED AWAY FROM US. WE SHOULD BE ON 135.4 WHICH WAS FOR GOING SSW. TRUE WE DID TURN THROUGH S ON OUR TURN TO PDZ, BUT TRUELY OUR RTE WAS E TO NE. I ALSO QUESTION WHY THERE ARE FREQ FOR NNE, SW, N, ETC, IF THEY ARE NOT INTENDED FOR ACFT DEPARING ON RTES IN THOSE DIRECTIONS. NO EVASIVE ACTION WAS PERFORMED. NO CONFLICT OCCURRED. NO FURTHER COMMENTS WERE RECEIVED AND WE PROCEEDED TO ORD.

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.