Several issues have been identified that will require Change 1 documentation to the existing Appendix F Iridium Certus MOPS: 1.Changes to Section F.2.3.5 for Lightning Induced Transient Testing required in DO-160 – missing note and table F-32 update 2.Changes to Receiver Susceptibility requirements and test (Section F.2.2.3.1.3.2.6. and F.2.4.3.1.2.2.6) 3.Changes to Harmonic, Spurious and Noise Requirements Table F-18 and associated Notes. (Section F.2.2.3.1.3.1.4). 4.Changes to fmax/fmin frequency range calculation in Section F.2.4.3.1.2.1.4 5.Changes to fmax/fmin frequency range calculation in Section F.2.4.3.1.2.1.8 6.Change to Rejection of Signals Outside the NGSS Receive Band (F.2.2.3.1.3.2.3) 7.Changes to Receiver Operation in Moving Aircraft requirement (Section F.2.2.3.1.3.2.5) 8.Changes to Receiver Operation in Moving Aircraft Test (Section F.2.4.3.1.2.2.5) 9.Change in Transmitter Operation in Moving Aircraft Requirement (Section F.2.2.3.1.3.1.9) 10.Change in Transmitter Operation in Moving Aircraft Test (F.2.4.3.1.2.1.9) 11.Change in Error Vector Magnitude Requirement (F.2.2.3.1.3.1.10)