Sct attempted to have an air carrier aircraft on a visual approach to lax 25R accelerate and fly a p...

Attributes
ACN	946939
Time
Date	201105
Local Time Of Day	1201-1800
Place
Locale Reference	SCT.TRACON
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B777-200
Operating Under FAR Part	Part 129
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Experience	Flight Crew Last 90 Days 75 Flight Crew Total 10000 Flight Crew Type 7000
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 10000 Flight Crew Type 600
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy

Narrative:

[We were] on approach control frequency. Approach control called out B777 traffic at 10 O'clock. Captain called visual. Shortly; we were cleared visual approach runway 25R; and were told to maintain visual separation from the B777 which was on a base turning to final and 3 miles ahead of us. I began slowing to approach speed immediately to ensure wake turbulence separation. Approach control saw this and told us to speed up immediately as he planned on putting us beside the B777. This is completely unsafe on all counts. I cannot maintain wake turbulence separation while coming up behind another aircraft; with winds blowing across our path from the 777; and then fly alongside a 777; exposing the aircraft to wake turbulence until we move from 3 miles behind until just ahead of his wings. Approach control told us if we didn't speed up; he would break us off from the approach. Approach control eventually; in a disgusted voice; sent us to tower frequency. I maintained minimum approach speed in order to build separation behind the 777 to 4 miles. Several thoughts: approach control cannot clear us the visual; thus putting wake turbulence on us; then tell us to speed up to bring us right along side a heavy on closely spaced runways. Where does this come from? This is becoming prevalent by approach control; giving pilots visual clearances; then taking away the pilots ability to separate the aircraft with speed. Bottom line -- this controller needs some counseling on proper approach procedures as well as separation criteria.

Original NASA ASRS Text

Title: SCT attempted to have an air carrier aircraft on a visual approach to LAX 25R accelerate and fly a parallel approach beside a B777 ignoring the potential for a wake encounter during the maneuver. The crew refused.

Narrative: [We were] on Approach Control frequency. Approach Control called out B777 traffic at 10 O'clock. Captain called visual. Shortly; we were cleared visual approach Runway 25R; and were told to maintain visual separation from the B777 which was on a base turning to final and 3 miles ahead of us. I began slowing to approach speed immediately to ensure wake turbulence separation. Approach Control saw this and told us to speed up immediately as he planned on putting us beside the B777. This is completely unsafe on all counts. I cannot maintain wake turbulence separation while coming up behind another aircraft; with winds blowing across our path from the 777; and then fly alongside a 777; exposing the aircraft to wake turbulence until we move from 3 miles behind until just ahead of his wings. Approach Control told us if we didn't speed up; he would break us off from the approach. Approach Control eventually; in a disgusted voice; sent us to Tower frequency. I maintained minimum approach speed in order to build separation behind the 777 to 4 miles. Several thoughts: Approach Control cannot clear us the visual; thus putting wake turbulence on us; then tell us to speed up to bring us right along side a heavy on closely spaced runways. Where does this come from? This is becoming prevalent by Approach Control; giving pilots visual clearances; then taking away the pilots ability to separate the aircraft with speed. Bottom line -- this Controller needs some counseling on proper approach procedures as well as separation criteria.

Data retrieved from NASA's ASRS site as of April 2012 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.

Sct attempted to have an air carrier aircraft on a visual approach to lax 25R accelerate and fly a parallel approach beside a B777 ignoring the potential for a wake encounter during the maneuver. The crew refused.