<< >> NASA ASRS Report 468103, April 2000

Flight crew of a B737-300 climbed off assigned descent intermediate altitude in response to a TCASII RA and then returned after climbing 400 ft.

Attributes
ACN	468103
Time
Date	200004
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bur.airport
State Reference	CA
Altitude	msl bound lower : 7000 msl bound upper : 7400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival : on vectors
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise : level
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 270 flight time total : 18000
ASRS Report	468103
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3900 flight time type : 300
ASRS Report	468380
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe
Independent Detector	aircraft equipment : tcas other flight crewa other flight crewb
Resolutory Action	flight crew : returned to assigned altitude flight crew : took precautionary avoidance action
Consequence	Other
Miss Distance	vertical : 300
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Crew received an RA and deviated from assigned altitude -- from 7000 ft to 7400 ft. Received a clear of conflict and returned to 7000 ft assigned altitude. No warning of traffic from approach control. Approach was informed of deviation.

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Original NASA ASRS Text

Title: FLC OF A B737-300 CLBED OFF ASSIGNED DSCNT INTERMEDIATE ALT IN RESPONSE TO A TCASII RA AND THEN RETURNED AFTER CLBING 400 FT.

Narrative: CREW RECEIVED AN RA AND DEVIATED FROM ASSIGNED ALT -- FROM 7000 FT TO 7400 FT. RECEIVED A CLR OF CONFLICT AND RETURNED TO 7000 FT ASSIGNED ALT. NO WARNING OF TFC FROM APCH CTL. APCH WAS INFORMED OF DEV.

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.