12 April 2017
- 0534Z 5574kHz San Francisco working New Zealand (ANZ) 7 (San Francisco-Auckland) with a SELCAL check on FSBR (ANZ B772 ZK-OKG)
- 0536Z 5574kHz San Francisco working QANTAS 8 (Dallas/Fort Worth-Sydney) advising at 20N primary is 5643 secondary 3467 and a SELCAL check on DLJS (QFA A388 VH-OQH). This answers a question of mine about who controls the Mazatlan OCA where there are no frequencies or ground stations for this Mexican airspace. It looks like when they are out of VHF range from the Mexican authorities they contact San Francisco on the CEP MWARA frequencies.
- 0739Z 6628kHz Lufthansa (DLH) 543 (Bogata-Frankfurt) calls Santa Maria who advises secondary 5598 and at 45N contact Shanwick on 8879 secondary 6547. A SELCAL check is good on JRCK (DLH A343 D-AIGL)
- 0740Z 6628kHz New York calls N186PA with a clearance but I don’t hear the aircraft and I don’t hear the clearance read by New York