An air carrier B737 flight crew reports that they received an advisory from approach control of a potential conflict followed by a TCASII RA and later saw a white cpr jet climb through their assigned altitude. The rptrs were able to easily evade due to the timely warnings.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	373740
Time
Date	199707
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : sdg airport : oak
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 12500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time last 90 days : 180 flight time total : 6000 flight time type : 4000
ASRS Report	373740
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : commercial
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 8000
ASRS Report	374159
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	atc equipment other atc equipment : unspecified aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 0 vertical : 1500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

While flying MADN3 arrival bay approach called VFR traffic at 11 O'clock position, 10000 ft climbing at 10 mi. We were at 11000 ft approaching locke intersection when TCASII showed climbing traffic at 10500 ft and closing. RA called for climb so I climbed. We saw traffic as it passed below us at our pervious altitude of 11000 ft. Captain called bay approach to advise of our deviation for a TCASII RA. The heads up from bay approach was a big help. With the approach control advisory we were able to look for/monitor TCASII for the traffic. Although we did deviate we saw it coming and it was safely smoothly executed. Without the deviation both aircraft would have been over locke intersection at 11000 ft.

Original NASA ASRS Text

Title: AN ACR B737 FLC RPTS THAT THEY RECEIVED AN ADVISORY FROM APCH CTL OF A POTENTIAL CONFLICT FOLLOWED BY A TCASII RA AND LATER SAW A WHITE CPR JET CLB THROUGH THEIR ASSIGNED ALT. THE RPTRS WERE ABLE TO EASILY EVADE DUE TO THE TIMELY WARNINGS.

Narrative: WHILE FLYING MADN3 ARR BAY APCH CALLED VFR TFC AT 11 O'CLOCK POS, 10000 FT CLBING AT 10 MI. WE WERE AT 11000 FT APCHING LOCKE INTXN WHEN TCASII SHOWED CLBING TFC AT 10500 FT AND CLOSING. RA CALLED FOR CLB SO I CLBED. WE SAW TFC AS IT PASSED BELOW US AT OUR PERVIOUS ALT OF 11000 FT. CAPT CALLED BAY APCH TO ADVISE OF OUR DEV FOR A TCASII RA. THE HEADS UP FROM BAY APCH WAS A BIG HELP. WITH THE APCH CTL ADVISORY WE WERE ABLE TO LOOK FOR/MONITOR TCASII FOR THE TFC. ALTHOUGH WE DID DEVIATE WE SAW IT COMING AND IT WAS SAFELY SMOOTHLY EXECUTED. WITHOUT THE DEV BOTH ACFT WOULD HAVE BEEN OVER LOCKE INTXN AT 11000 FT.

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.