Captain of air carrier large transport aircraft undershot a crossing altitude during a SID departure due a TCASII distraction and assuring separation with another aircraft in sight.

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Attributes
ACN	211181
Time
Date	199205
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : oak airport : sfo
State Reference	CA
Altitude	msl bound lower : 2700 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : oak tracon : bna
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : initial
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000
ASRS Report	211181
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : cfi pilot : atp pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 210 flight time total : 5000 flight time type : 210
ASRS Report	211182
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Sfo SID requires 3000 ft altitude by 6 DME sfo. Our departure route took us over oak. TA by TCASII system diverted our attention from flying the prescribed SID. The TCASII alert was for the same aircraft that bay departure was concerned about. Our altitude at 6 DME sfo was 2700 ft. Aircraft was in sight at all times.

Original NASA ASRS Text

Title: CAPT OF ACR LGT ACFT UNDERSHOT A XING ALT DURING A SID DEP DUE A TCASII DISTR AND ASSURING SEPARATION WITH ANOTHER ACFT IN SIGHT.

Narrative: SFO SID REQUIRES 3000 FT ALT BY 6 DME SFO. OUR DEP RTE TOOK US OVER OAK. TA BY TCASII SYS DIVERTED OUR ATTN FROM FLYING THE PRESCRIBED SID. THE TCASII ALERT WAS FOR THE SAME ACFT THAT BAY DEP WAS CONCERNED ABOUT. OUR ALT AT 6 DME SFO WAS 2700 FT. ACFT WAS IN SIGHT AT ALL TIMES.

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.