<< >> NASA ASRS Report 622212, February 2003

A B737 flight crew receive a TCASII RA and have to climb to avoid an aircraft that failed to level off.

Attributes
ACN	622212
Time
Date	200302
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : psp.vortac
State Reference	CA
Altitude	msl bound lower : 26000 msl bound upper : 27000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : zla.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : kayoh
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zla.artcc
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 18000 flight time type : 4000
ASRS Report	622212
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	altitude deviation : overshoot conflict : airborne critical non adherence : far non adherence : clearance
Independent Detector	aircraft equipment : tcas
Resolutory Action	controller : issued new clearance flight crew : took precautionary avoidance action flight crew : took evasive action
Miss Distance	vertical : 600
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

In vicinity of psp on kayoh 4 arrival at FL260, we received a TA followed almost immediately by an RA to 'climb.' display screen showed traffic at 11 O'clock position, 800 ft below and climbing to 700 ft, then 600 ft below. Our climb resolved the conflict. ATC was informed as we departed FL260. We climbed approximately 1000 ft. Intruding aircraft informed ATC that they had overshot their assigned altitude of FL250. We were then assigned FL270. Remainder of flight was uneventful.

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Original NASA ASRS Text

Title: A B737 FLT CREW RECEIVE A TCASII RA AND HAVE TO CLB TO AVOID AN ACFT THAT FAILED TO LEVEL OFF.

Narrative: IN VICINITY OF PSP ON KAYOH 4 ARR AT FL260, WE RECEIVED A TA FOLLOWED ALMOST IMMEDIATELY BY AN RA TO 'CLB.' DISPLAY SCREEN SHOWED TFC AT 11 O'CLOCK POS, 800 FT BELOW AND CLBING TO 700 FT, THEN 600 FT BELOW. OUR CLB RESOLVED THE CONFLICT. ATC WAS INFORMED AS WE DEPARTED FL260. WE CLBED APPROX 1000 FT. INTRUDING ACFT INFORMED ATC THAT THEY HAD OVERSHOT THEIR ASSIGNED ALT OF FL250. WE WERE THEN ASSIGNED FL270. REMAINDER OF FLT WAS UNEVENTFUL.

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.