sQRH

sQRH brings the Quick Reference Handbook into a format that works on an iPad or iPhone — designed for fast, accurate access during the high-workload situations where QRH content matters most. What began as a digital handbook has grown into a compact cockpit toolkit.

Version 4.7 is out on the App Store, with a HOT timer start set to the final fluid application, hold marks that never stop the clock, Appendix A holdover times with flaps/slats deployed, and an easier-to-read crew rest card whose start you can fine-tune until the rest begins.

Core content

• Emergency and abnormal procedures: Structured for rapid identification and execution under pressure
• Standard Operating Procedures: Step-by-step SOPs in a clean, readable format
• Operational data: Performance tables, configuration summaries and operator-specific procedures, with a two-panel browser on iPad
• Checklists: Normal and abnormal checklists optimized for the small screen, with state tracking
• Hold-over time tables: Deicing and anti-icing reference data integrated directly in the app — FAA and Transport Canada, Winter 2026-27

Cockpit tools

• Flight Time Limitations (FTL): An EASA ORO.FTL duty-limit calculator for on-the-spot FDP assessment — flight and cabin crew, augmented crew with in-flight rest, split duty, delayed reporting, WOCL and commander discretion. v4.6.1 puts the result first: the limit as a clock time (latest on-blocks), the margin on one green/amber/red scale, the extension, split duty and discretion options each with their own time, and a clock-time timeline with a now cursor. The crew rest has its own card: arm it for the planned start (OUT plus climb buffer) and it starts by itself, runs as a Live Activity on the lock screen and in the Dynamic Island — all in UTC — and leaves the lock screen once every rest period is over. Tap a rest period to set an alarm that rings like the Clock app before that rest ends, even with sQRH closed (iOS 26.1 or later). v4.7 keeps the − / + buttons on the card before the rest starts, so the start (OUT plus X minutes) can be adjusted at the last moment, and shows the rest periods and window in larger, high-contrast type.
• Hold-over time (HOT): The FAA and Transport Canada tables, refreshed every year ahead of the northern winter. Pick the weather and the fluid type and read the window, with a countdown timer that runs on the lock screen and in the Dynamic Island. The timer stays pinned while weather and fluid scroll, and the timer and conditions are shared over Bluetooth with sQRH or No-ICE. v4.7 lets you set the timer start to when the final fluid application began, as given in the anti-icing code; a tap marks a hold while the hold-over time keeps counting; and with flaps/slats deployed it shows the holdover times of Appendix A of the guidelines.
• Altitude (ALT): An interactive ISA/QNH-corrected altitude table with a GPS-aware readout, a metres/feet toggle and metric (Chinese RVSM) flight levels.
• Takeoff CG/TRIM: Enter your CG on a cockpit numpad and read the THS trim position instantly on a horizontal gauge, with trim data parsed per aircraft from the official eQRH data.

Live device sync and sharing

Pair an iPhone and iPad by scanning a QR code and the two devices stay in step — checked items and altitude settings sync live over encrypted MultipeerConnectivity, with no internet required. A pairing survives an app restart, recovers on its own after a Wi-Fi drop or backgrounding, detects a peer that has gone silent, and reports an honest connection status.

FTL duties — sectors, crew and crew rest, including an armed start — and the HOT timer are shared on demand with Nearby Share over Bluetooth, with sQRH on iPhone and iPad, No-ICE for the HOT timer, and sFTL for FTL on Android. Nothing changes on the receiving device until its crew confirms. Rest alarms stay on your own device.

Versions Module

The Versions Module tracks which version of which EFB application is installed across a mixed fleet of crew devices — a clear, auditable record that is useful both for individual pilots and for EFB administrators managing compliance. Pull to refresh and it checks the App Store for newer versions; Settings tells you when a newer sQRH is available.

Design philosophy

sQRH is built by pilots for pilots. The information hierarchy and navigation are designed around how crews actually use a QRH in practice — not around what is easiest to implement technically. Text is large enough to read under cockpit lighting conditions, and navigation is direct, with minimum taps to reach any procedure. sQRH runs only on unmodified devices: a jailbroken iPhone or iPad is refused.