B757 crew did not have the cabin altitude set correctly. They requested a 360 degree turn to allow t...

Attributes
ACN	411434
Time
Date	199808
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bog
State Reference	FO
Altitude	msl bound lower : 11000 msl bound upper : 11500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : bog tower : dfw
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Route In Use	approach : visual arrival other enroute : on vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	other : unknown
Flight Phase	descent : approach
Route In Use	approach : visual arrival other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	411434
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	411435
Events
Anomaly	conflict : airborne less severe other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Misunderstood request from our flight to tower. On approach to runway 13R at bogota, we noted cabin pressurization set at 6000 ft. With unlimited visibility and unaware that traffic was following us, we requested left 360 degree turn from tower to allow cabin to climb. Both pilots thought response from tower to be 'approved as requested.' while turning at 11000 ft we spotted and reported an aircraft on final approximately 7 mi to the west of our location. Tower gave this aircraft instructions in spanish and cleared us to resume the approach. During the 360 degree turn, the traffic was in sight at all times. Ground below was well lighted, and no terrain was noted on display. Contributing factors to this event were: poor radio reception, blocked xmissions, lack of traffic awareness due to other communications in spanish, and the misunderstood request from us to tower.

Original NASA ASRS Text

Title: B757 CREW DID NOT HAVE THE CABIN ALT SET CORRECTLY. THEY REQUESTED A 360 DEG TURN TO ALLOW THE CABIN TO CLB.

Narrative: MISUNDERSTOOD REQUEST FROM OUR FLT TO TWR. ON APCH TO RWY 13R AT BOGOTA, WE NOTED CABIN PRESSURIZATION SET AT 6000 FT. WITH UNLIMITED VISIBILITY AND UNAWARE THAT TFC WAS FOLLOWING US, WE REQUESTED L 360 DEG TURN FROM TWR TO ALLOW CABIN TO CLB. BOTH PLTS THOUGHT RESPONSE FROM TWR TO BE 'APPROVED AS REQUESTED.' WHILE TURNING AT 11000 FT WE SPOTTED AND RPTED AN ACFT ON FINAL APPROX 7 MI TO THE W OF OUR LOCATION. TWR GAVE THIS ACFT INSTRUCTIONS IN SPANISH AND CLRED US TO RESUME THE APCH. DURING THE 360 DEG TURN, THE TFC WAS IN SIGHT AT ALL TIMES. GND BELOW WAS WELL LIGHTED, AND NO TERRAIN WAS NOTED ON DISPLAY. CONTRIBUTING FACTORS TO THIS EVENT WERE: POOR RADIO RECEPTION, BLOCKED XMISSIONS, LACK OF TFC AWARENESS DUE TO OTHER COMS IN SPANISH, AND THE MISUNDERSTOOD REQUEST FROM US TO TWR.

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.

B757 crew did not have the cabin altitude set correctly. They requested a 360 degree turn to allow the cabin to climb.