<< >> NASA ASRS Report 313517, August 1995

Near midair collision -- an air carrier climbing near the edge of class B airspace has a TCASII 'RA' and misses another aircraft by 400 ft. Departure controller later has the traffic at 4000 ft.

Attributes
ACN	313517
Time
Date	199508
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : hnl
State Reference	HI
Altitude	msl bound lower : 3500 msl bound upper : 3500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : hnl
Operator	common carrier : air carrier
Make Model Name	DC-10 40
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 180 flight time total : 9000 flight time type : 2000
ASRS Report	313517
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 16000 flight time type : 1500
ASRS Report	313749
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 400
Supplementary
Primary Problem	ATC Human Performance

Narrative:

During initial climb after handoff to and in contact with departure control we were cleared to FL340. Climbing through 3500 ft TCASII showed TA with traffic 500 ft above us, followed by TCASII RA, 'reduce climb,' we leveled off, traffic passed overhead (indicated by TCASII) without visual contact. TCASII stated 'clear of conflict.' we then checked with departure about traffic. He stated traffic was behind us at 4000 ft without other comments. We then resumed our climb to FL340. Note: at level off TCASII showed traffic passed directly over us at 400 ft.

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Original NASA ASRS Text

Title: NMAC -- AN ACR CLBING NEAR THE EDGE OF CLASS B AIRSPACE HAS A TCASII 'RA' AND MISSES ANOTHER ACFT BY 400 FT. DEP CTLR LATER HAS THE TFC AT 4000 FT.

Narrative: DURING INITIAL CLB AFTER HDOF TO AND IN CONTACT WITH DEP CTL WE WERE CLRED TO FL340. CLBING THROUGH 3500 FT TCASII SHOWED TA WITH TFC 500 FT ABOVE US, FOLLOWED BY TCASII RA, 'REDUCE CLB,' WE LEVELED OFF, TFC PASSED OVERHEAD (INDICATED BY TCASII) WITHOUT VISUAL CONTACT. TCASII STATED 'CLR OF CONFLICT.' WE THEN CHKED WITH DEP ABOUT TFC. HE STATED TFC WAS BEHIND US AT 4000 FT WITHOUT OTHER COMMENTS. WE THEN RESUMED OUR CLB TO FL340. NOTE: AT LEVEL OFF TCASII SHOWED TFC PASSED DIRECTLY OVER US AT 400 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.