iPadOS 9.9.12.3 (build 16F5139e) is an official Apple over-the-air update for the iPad Air (Cellular), released on 2019-04-22T17:07:44Z. The update package is 2.05 GB. This is a full OTA update that can be applied from any compatible base version. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: 4902a5f87a0fcdd2b37af9eb2feffa0bd1be697c.zip.