Goofing around with the presets in OpenWebRX+ - happened to note that the preset threw me into decoding HFDL, on the AirSpy HF+.
Caveat: be gentle, I have NO idea what I'm doing:
HFDL 6.6610 MHz
GS-4 - Riverhead
Time Flight Aircraft Data
03:55:36 A057EB Logon confirm
03:55:36 F-HUVL ACARS frame
03:55:30 NK837 @180.0000,180.0000
03:55:40 UPS214 @47.4185,-80.3401
03:55:44 CND598 347245 @26.3343,-56.8667
03:55:50 TSC427 @33.5441,-81.0769
03:26:16 FX1282 @33.4229,-94.1338
03:56:03 FX1307 N121FE ACARS frame
03:56:39 39D2A2 Logon confirm
03:56:39 A2D1C6 Logoff request
03:56:39 FX1307 N121FE ACARS frame
03:56:54 UAE69T @38.0547,-71.4569
03:57:06 FX1307 N121FE ACARS frame
0EH0356402SH
03:57:13 EC-NTB ACARS frame
03:57:13 F-HUVC ACARS frame
03:57:08 9220 AA2CB0 @4.6946,-74.1421
03:57:54 PAC998 @39.0448,-84.3182
03:58:00 ACA127 @45.0059,-81.7941
03:58:02 AMX8 @55.2600,-67.4799
03:58:22 A11BC8 Logoff request
03:58:22 F-HUVC ACARS frame
03:58:22 F-HUVL ACARS frame
03:58:22 N755AV ACARS frame
03:58:39 AV206 N992AV ACARS frame
03:58:49 39C427 Logon confirm
03:58:49 AV206 N992AV ACARS frame
03:58:42 AEA98 @29.0726,-70.7964
03:58:48 AMX1 @31.9229,-69.2645
03:58:50 AEA64 @22.0033,-84.8963
03:59:48 SIA322 @49.4036,14.7087
03:35:58 LP2483 @32.0568,-83.8035
Airspy HF+