Flight crew of a DC9 climbed in response to a TCASII during descent for landing.

Attributes
ACN	335740
Time
Date	199605
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : hnl
State Reference	HI
Altitude	msl bound lower : 6000 msl bound upper : 6800
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : hnl
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	DC-10 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
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 flight time type : 120
ASRS Report	335740
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	horizontal : 12000 vertical : 200
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Flight from lih to hnl. Received descent clearance from center to 8000 ft. Switched to approach control at normal point. A large thunderstorm was just south of barbers point and approach was very busy vectoring aircraft around the thunderstorm. Approach control gave us the clearance 'air carrier X, descend to 3000 ft, fly heading 110 degrees, intercept the runway 8L localizer, cleared for the ILS approach.' we received a TCASII signal of traffic at 11 O'clock 800 ft below us, at approximately 8 mi. The signal rapidly closed to within 2 mi and 200 ft. A TCASII RA was received and followed, to climb. We advised approach, as we saw the air carrier Y, DC10 pass by, that we were responding to a TCASII RA. Approach told us that he previously told us to expedite descent below 6000 ft. Neither the copilot or myself heard that supposed expedite call. It could have been stepped on by other radio calls. There was a lot of chatter. The rest of the flight was uneventful.

Original NASA ASRS Text

Title: FLC OF A DC9 CLBED IN RESPONSE TO A TCASII DURING DSCNT FOR LNDG.

Narrative: FLT FROM LIH TO HNL. RECEIVED DSCNT CLRNC FROM CTR TO 8000 FT. SWITCHED TO APCH CTL AT NORMAL POINT. A LARGE TSTM WAS JUST S OF BARBERS POINT AND APCH WAS VERY BUSY VECTORING ACFT AROUND THE TSTM. APCH CTL GAVE US THE CLRNC 'ACR X, DSND TO 3000 FT, FLY HDG 110 DEGS, INTERCEPT THE RWY 8L LOC, CLRED FOR THE ILS APCH.' WE RECEIVED A TCASII SIGNAL OF TFC AT 11 O'CLOCK 800 FT BELOW US, AT APPROX 8 MI. THE SIGNAL RAPIDLY CLOSED TO WITHIN 2 MI AND 200 FT. A TCASII RA WAS RECEIVED AND FOLLOWED, TO CLB. WE ADVISED APCH, AS WE SAW THE ACR Y, DC10 PASS BY, THAT WE WERE RESPONDING TO A TCASII RA. APCH TOLD US THAT HE PREVIOUSLY TOLD US TO EXPEDITE DSCNT BELOW 6000 FT. NEITHER THE COPLT OR MYSELF HEARD THAT SUPPOSED EXPEDITE CALL. IT COULD HAVE BEEN STEPPED ON BY OTHER RADIO CALLS. THERE WAS A LOT OF CHATTER. THE REST OF THE 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.