Deviation from assigned altitude.

Attributes
ACN	202757
Time
Date	199203
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : sac airport : smf
State Reference	CA
Altitude	msl bound lower : 11000 msl bound upper : 11800
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : mcc tower : aus
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent : approach descent other
Route In Use	arrival other enroute : on vectors enroute airway : mcc
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 140 flight time total : 12500
ASRS Report	202757
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Flight san-smf-medium large transport 5 NM southeast sac VOR crew experienced TCASII RA calling for immediate climb. Crew responded by climbing to 11800 ft and asking sac approach control if it had any traffic in vicinity of flight. He responded negative, RA ceased and crew descended to 11000 ft. Crew advised sac approach control of apparent false TCASII RA warning. Flight landed smf without further incident. Sac did not advise crew of any near miss or separation loss as a result of crew response to TCASII RA warning.

Original NASA ASRS Text

Title: DEV FROM ASSIGNED ALT.

Narrative: FLT SAN-SMF-MLG 5 NM SE SAC VOR CREW EXPERIENCED TCASII RA CALLING FOR IMMEDIATE CLB. CREW RESPONDED BY CLBING TO 11800 FT AND ASKING SAC APCH CTL IF IT HAD ANY TFC IN VICINITY OF FLT. HE RESPONDED NEGATIVE, RA CEASED AND CREW DSNDED TO 11000 FT. CREW ADVISED SAC APCH CTL OF APPARENT FALSE TCASII RA WARNING. FLT LANDED SMF WITHOUT FURTHER INCIDENT. SAC DID NOT ADVISE CREW OF ANY NEAR MISS OR SEPARATION LOSS AS A RESULT OF CREW RESPONSE TO TCASII RA WARNING.

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.