Air carrier medium large transport X messes up visual approach at mht decides to improvise a recover...

Attributes
ACN	140498
Time
Date	199003
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mht
State Reference	NH
Altitude	msl bound lower : 2000 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mht
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 3200 flight time type : 200
ASRS Report	140498
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : undershoot conflict : airborne less severe non adherence : clearance other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 24300 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier medium large transport X arriving mht from phl. Captain was flying aircraft. We had been cleared for visibility approach to runway 35. As we turned left base to final at approximately 4 mi, aircraft configured flaps 10 degrees and gear down. Captain decided we were too high for the approach and elected to perform a left 360 degree turn to lose altitude. I was aware that another aircraft Y had been cleared for approach to follow us. As the captain began his left turn he instructed me to notify the tower. Due to radio congestion, I was not able to notify atl until we were 30-45 degrees into the turn. The tower instructed us to execute a right 360 degree turn and then realized that we were already established in the left turn. He then instructed us to fly 270 degrees and maintain 2500'. I replied that we would fly 270 degrees and climb to 2500'. The captain continued the turn to about 240 degrees until I told him we were to fly 270 degrees. The tower continued to give instructions to the other aircraft and finally instructed him to maintain visibility sep from us. The captain seemed surprised when I pointed out the traffic to him and was surprised that the tower was not going to let us continue the 360 degree turn and come right in to land. The captain leveled the aircraft at about 2300' and remained there until we were again cleared for visibility approach behind the other aircraft, air carrier light transport Y. We performed the approach and landing west/O further incident.

Original NASA ASRS Text

Title: ACR MLG X MESSES UP VISUAL APCH AT MHT DECIDES TO IMPROVISE A RECOVERY BEFORE ASKING LCL CTLR IF THE MANEUVER WOULD BE OK. LESS THAN STANDARD SEPARATION.

Narrative: ACR MLG X ARRIVING MHT FROM PHL. CAPT WAS FLYING ACFT. WE HAD BEEN CLRED FOR VIS APCH TO RWY 35. AS WE TURNED LEFT BASE TO FINAL AT APPROX 4 MI, ACFT CONFIGURED FLAPS 10 DEGS AND GEAR DOWN. CAPT DECIDED WE WERE TOO HIGH FOR THE APCH AND ELECTED TO PERFORM A LEFT 360 DEG TURN TO LOSE ALT. I WAS AWARE THAT ANOTHER ACFT Y HAD BEEN CLRED FOR APCH TO FOLLOW US. AS THE CAPT BEGAN HIS LEFT TURN HE INSTRUCTED ME TO NOTIFY THE TWR. DUE TO RADIO CONGESTION, I WAS NOT ABLE TO NOTIFY ATL UNTIL WE WERE 30-45 DEGS INTO THE TURN. THE TWR INSTRUCTED US TO EXECUTE A RIGHT 360 DEG TURN AND THEN REALIZED THAT WE WERE ALREADY ESTABLISHED IN THE LEFT TURN. HE THEN INSTRUCTED US TO FLY 270 DEGS AND MAINTAIN 2500'. I REPLIED THAT WE WOULD FLY 270 DEGS AND CLB TO 2500'. THE CAPT CONTINUED THE TURN TO ABOUT 240 DEGS UNTIL I TOLD HIM WE WERE TO FLY 270 DEGS. THE TWR CONTINUED TO GIVE INSTRUCTIONS TO THE OTHER ACFT AND FINALLY INSTRUCTED HIM TO MAINTAIN VIS SEP FROM US. THE CAPT SEEMED SURPRISED WHEN I POINTED OUT THE TFC TO HIM AND WAS SURPRISED THAT THE TWR WAS NOT GOING TO LET US CONTINUE THE 360 DEG TURN AND COME RIGHT IN TO LAND. THE CAPT LEVELED THE ACFT AT ABOUT 2300' AND REMAINED THERE UNTIL WE WERE AGAIN CLRED FOR VIS APCH BEHIND THE OTHER ACFT, ACR LTT Y. WE PERFORMED THE APCH AND LNDG W/O FURTHER INCIDENT.

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.

Air carrier medium large transport X messes up visual approach at mht decides to improvise a recovery before asking local controller if the maneuver would be ok. Less than standard separation.