Narrative:

Typical night tour on last leg. Exiting class east airspace for class B airspace. Made last call in class east about 1-1/2 miles from bravo at rosemead cemetery on basin helicopter frequency 123.02 as such: ' [aircraft X] southbound past rosemead cemetery at one-thousand one-hundred.' no response. Waited 5 seconds. Changed to lax class B 119.8. About one mile outside of airspace contacted lax on dedicated helicopter frequency 119.8 as such: 'lax [aircraft X] ... Approaching coliseum with copter in sight; request harbor south transition.' '[aircraft X] [possibly ident] and report altitude and squawk 0207[?].' '[aircraft X] 900 feet; squawking 0207[?].' [lax then cleared me through bravo.] me: '[aircraft X]; cleared through bravo; harbor south; at or below 900 feet.' approx 45 seconds later [aircraft Y] contacted lax on helicopter radio and ask for my call sign. Lax copters gave '[aircraft X]'. No further requests were made by [aircraft Y]. No one called me in the air or on the ground regarding the inquiry. Departing class B; lax helicopters handed me off in the normal fashion.at the position of contacting helicopter; I was still in class east airspace. While calling helicopter; I saw the other helicopter below and a quarter mile away; approximately 300 feet down; and a quarter mile away; and saw him has no threat. I made my call to la and called him out. I was cruising at 900 feet MSL. He was circling at approximately 600 feet MSL or lower. The terrain is approximately 100 feet MSL. As I made my call to la and they called me back; the copter continued to circle toward me. He shown his 'night-sun' light on me but it didn't acquire sufficient angle to illuminate me. This is good; because he would have blinded me with that light. In order to maintain normal flight safety; I maintained altitude at 900 feet and did not descend until entering class B airspace safely beyond the circling aircraft. There was no need to alter course; altitude; or airspeed.at no time; short of the 'night-sun' light; were we of any endangerment to one another. No evasive maneuvers were required on our parts. I maintained altitude; direction; and airspeed. We were on different frequencies because we were in a transition area.my only concern in regard to the urgency of the matter was the other helicopter's desire to obtain my call sign without specific cause; thus this report to clarify safety. However; the fact that I could have been blinded by the copter's 'night-sun' light is another matter.

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Original NASA ASRS Text

Title: R44 pilot reported NMAC with a police department helicopter in the LAX area.

Narrative: Typical night tour on last leg. Exiting Class E airspace for Class B airspace. Made last call in Class E about 1-1/2 miles from Bravo at Rosemead Cemetery on basin helicopter frequency 123.02 as such: ' [aircraft X] southbound past Rosemead Cemetery at one-thousand one-hundred.' No response. Waited 5 seconds. Changed to LAX Class B 119.8. About one mile outside of airspace contacted LAX on dedicated helicopter frequency 119.8 as such: 'LAX [aircraft X] ... approaching Coliseum with copter in sight; request Harbor South transition.' '[aircraft X] [possibly ident] and report altitude and squawk 0207[?].' '[aircraft X] 900 feet; squawking 0207[?].' [LAX then Cleared me through Bravo.] Me: '[aircraft X]; cleared through Bravo; Harbor South; at or below 900 feet.' Approx 45 seconds later [aircraft Y] contacted LAX on helicopter radio and ask for my call sign. LAX Copters gave '[aircraft X]'. No further requests were made by [aircraft Y]. No one called me in the air or on the ground regarding the inquiry. Departing Class B; LAX Helicopters handed me off in the normal fashion.At the position of contacting helicopter; I was still in Class E airspace. While calling helicopter; I saw the other helicopter below and a quarter mile away; approximately 300 feet down; and a quarter mile away; and saw him has no threat. I made my call to LA and called him out. I was cruising at 900 feet MSL. He was circling at approximately 600 feet MSL or lower. The terrain is approximately 100 feet MSL. As I made my call to LA and they called me back; the copter continued to circle toward me. He shown his 'night-sun' light on me but it didn't acquire sufficient angle to illuminate me. This is good; because he would have blinded me with that light. In order to maintain normal flight safety; I maintained altitude at 900 feet and did not descend until entering Class B airspace safely beyond the circling aircraft. There was no need to alter course; altitude; or airspeed.At no time; short of the 'night-sun' light; were we of any endangerment to one another. No evasive maneuvers were required on our parts. I maintained altitude; direction; and airspeed. We were on different frequencies because we were in a transition area.My only concern in regard to the urgency of the matter was the other helicopter's desire to obtain my call sign without specific cause; thus this report to clarify safety. However; the fact that I could have been blinded by the copter's 'night-sun' light is another matter.

Data retrieved from NASA's ASRS site 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.