Issues

• Decode the register a Comm-B reply carries from the reply

  BDSenhancementfixed in branchmode-s
  SeRoSystems/lib1090#209 · Filter by author mrksngl opened on Oct 1, 2026 · v5
  

• BDS 1,0: the ACAS X identification in bits 43-46 and ACAS version code 3 are not reflected

  ACASBDSenhancementfixed in branchmode-s
  SeRoSystems/lib1090#208 · Filter by author mrksngl opened on Sep 30, 2026 · v5
  

• Make decoding before the ADS-B version is known configurable (ED-102B §N.1.2 vs. §N.2.5 NOTE 2)

  ADS-Bdecoderenhancementfixed in branch
  SeRoSystems/lib1090#207 · Filter by author mrksngl opened on Sep 30, 2026 · v5
  

• E45: Avoidable array copies for every message

  decoderenhancementfixed in branch
  SeRoSystems/lib1090#203 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• E34: Mutable internal arrays are exposed and shared; CRC_polynomial is a public mutable static array

  bugdecoderfixed in branch
  SeRoSystems/lib1090#192 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• E33: Invalid input costs about 18 times as much as a valid message (exception with String.format)

  bugdecoderfixed in branch
  SeRoSystems/lib1090#191 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• E25: API inconsistencies

  ADS-BADS-RBDSbugfixed in branch
  SeRoSystems/lib1090#183 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• E24: Wx AIREP wingspan code 1 is returned as 5.002 ft

  ADS-BADS-Rbugfixed in branch
  SeRoSystems/lib1090#182 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• E21: ExampleDecoder prints v3 Target State and Status as "Unknown extended squitter"; its UnspecifiedFormatError comment is out of date

  bugdecoderdocumentationfixed in branch
  SeRoSystems/lib1090#179 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• M21: The tracked geometric-minus-barometric altitude difference is never cleared by a later "no information" or N/A code, and it does not age

  ADS-Bbugdecoderfixed in branch
  SeRoSystems/lib1090#160 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• M16: Hex parsing: odd length throws StringIndexOutOfBoundsException instead of BadFormatException; non-hex characters are silently accepted

  bugdecoderfixed in branch
  SeRoSystems/lib1090#155 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• M15: AllCallReply with noCRC=true applies the CRC a second time: CL/IC wrong, and hasValidInterrogatorCode() rejects valid replies

  bugfixed in branchmode-s
  SeRoSystems/lib1090#154 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• M14: DF20/DF21 replies with Data Parity (DP) produce a "Modified AA" that is reported as an ICAO 24-bit address

  bugfixed in branchmode-s
  SeRoSystems/lib1090#153 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• M13: ModeSDownlinkMsg.equals() and hashCode() are inconsistent

  bugfixed in branchmode-s
  SeRoSystems/lib1090#152 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• M04: Messages with a bad CRC change the per-target state; decode() does not check parity and the example decodes before checking

  bugdecoderfixed in branch
  SeRoSystems/lib1090#143 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  4

  

• S06: Stale or unvalidated CPR reference used for local decoding; a wrong position is returned as reasonable

  ADS-Bbugdecoderfixed in branch
  SeRoSystems/lib1090#137 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3

  

• S05: Target State and Status v1: Selected Altitude reported although "Vertical Data Available/Source Indicator" = 0

  ADS-Bbugfixed in branch
  SeRoSystems/lib1090#136 · Filter by author willi-werner opened on Sep 29, 2026 · v5
  3