Sky DutyFL3XX Alternative for Small Charter and Part 91 Operators
Every tail and every trip on one board, at a price you can see.
$39 per aircraft per month
No card needed.Free for 14 days with up to 2 aircraft.
Add the rest when you subscribe.
Sky Duty runs on iPhone and iPad. Scan to get it.
- $39 per aircraft per month
- Unlimited users
- 14-day free trial in the app
- iPhone and iPad
FL3XX is a cloud platform for charter operators and flight departments, priced by quote after a review of your requirements.
Sky Duty is a native iPhone and iPad app for small charter and Part 91 operators, at $39 per aircraft per month.
Reviewed
Tap it, or ask it.
You ask “Schedule N519SD from KPHX to KAPA on Wednesday, November 4 at 8am Phoenix time, Jamie Cole as PIC.”
You ask “Put N846SD down for its annual from October 30 to November 3 at KAPA.”
Nothing changes until you confirm.
Transcripts
Catch the clash: Prompt: “Schedule N519SD from KPHX to KAPA on Wednesday, November 4 at 8am Phoenix time, Jamie Cole as PIC.” The card shows KPHX → KAPA, aircraft N519SD, departs Nov 4, 2026 at 8:00 AM MST, PIC Jamie Cole. Checked: Found 1 aircraft conflict and 1 crew conflict. Prompt: “Make it Thursday, November 5 at 8 instead.” The new card shows Nov 5, 2026 at 8:00 AM MST. Checked: No aircraft or crew conflicts. Worked out: Read as 08:00 MST at KPHX — you said “Phoenix time” earlier. Assumed: nothing. Confirm. “Trip #659 created — N519SD.”
Schedule the annual: Prompt: “Put N846SD down for its annual from October 30 to November 3 at KAPA.” The card shows Aircraft N846SD — Beechcraft King Air 350i, Facility KAPA, Starts Fri, Oct 30, Ends Tue, Nov 3, Title Annual Inspection. Checked: N846SD — Beechcraft King Air 350i is on this fleet. Checked: 2 trips in this window: KAPA-KASE Fri, Oct 30; KASE-KAPA Sun, Nov 1. Assumed: nothing. Confirm. The result line confirms N846SD out of service Oct 30 – Nov 3 at KAPA. The Schedule shows DOWNTIME · N846SD · Annual Inspection · Scheduled · Oct 30 – Nov 3.
Tap it: Trip N519SD #642 on Wednesday, Oct 21 opens into its legs: KPHX → KFLG → KSAF → KPHX, 3 legs, scheduled. Leg 1 KPHX → KFLG (86F, 56F), Leg 2 KFLG → KSAF (56F, 57F), Leg 3 KSAF → KPHX (57F, 86F), each with weather at both airports.
The short answer
What is FL3XX?
FL3XX is a cloud platform for Part 135 charter and Part 91 flight departments, among others, with modules for sales and quoting, dispatch, crew, maintenance, documents and reporting. It says its operators range from single-aircraft fleets to large multi-base organizations (checked October 2026).
Does Sky Duty quote charters, take Avinode requests or check duty limits?
No. It does not quote charters or connect to the Avinode marketplace, and it is not general-ledger accounting. It records flight time from the logbook and trip times from the schedule, and it does not make duty or rest determinations. Keep the tool you use for that.
It runs the operating side instead, as flight department software: it flags a clash before you confirm the trip, and the trip form shows what is due on the aircraft you pick.
Which one fits my operation?
FL3XX strengths
Pick FL3XX if your charter sells through quoting and Avinode requests, you want crew limits shown as you roster, and your maintenance is kept in CAMP, Flightdocs or Traxxall.
- Lists 200+ integrated services, Avinode, CAMP and QuickBooks among them, and an API with webhooks
Sky Duty advantages
Pick Sky Duty if you run a small charter fleet or a Part 91 department and want every tail and every trip on one board, and what each aircraft has due, on iPhone and iPad.
- You sign up yourself, with no quote process or sales call
- Unlimited users, priced per aircraft, with the AI assistant included
No card needed.Free for 14 days with up to 2 aircraft.
Add the rest when you subscribe.
What does it cost?
Sign up yourself in the app: no quote process, no sales call, and you know the price up front.
$39 per aircraft per month, or $429 per aircraft per year (one month free). Unlimited users. Start the trial with two of your aircraft, then add the rest of the fleet when you subscribe.
FL3XX: pricing by quote, a subscription priced by fleet size and configuration and quoted by its sales team (checked October 2026).
Feature comparison
| Feature | Sky Duty | FL3XX |
|---|---|---|
| Native iOS app (App Store) | Yes | Four iOS and Android apps, plus web |
| Works with no signal (schedule, logbook, expenses) | Yes | Crew App, for what was downloaded |
| Gantt scheduling | Yes | Dispatch with aircraft timelines |
| Maintenance tracking | Due by date, hours or cycles. | Hours and cycles, or CAMP, Flightdocs, Traxxall |
| Grounded or due aircraft on a trip | Flagged on the trip form; it saves after you override. | Sales warned of a maintenance conflict |
| Crew flight time and duty limits | Flight time in the logbook; duty limits not tracked. | Tracked to your ops manual rule set |
| Charter sales + quoting | No | Quotes with feasibility checks |
| Avinode charter marketplace | No | Requests in, quotes and prices back |
| How you start | Sign up yourself in the app. Free for 14 days with up to 2 aircraft. | A demo and a discovery call; no trial terms published (checked October 2026) |
| Published price | $39 per aircraft per month, unlimited users. | Pricing by quote (checked October 2026) |
FL3XX column: from fl3xx.com (its product, solutions, company facts and knowledge base pages), checked on October 31, 2026.
Switching from FL3XX
- Add your tails from the FAA registry: 300,000+ FAA aircraft.
- Import your logbook from CSV.
- Invite the whole team. Unlimited users.
Run your next week on Sky Duty beside what you use today, then move the rest of the fleet over when you subscribe. Keep quoting, duty limits and your SMS where they are. At a desk: Sky Duty runs on iPhone and iPad, and anyone else can subscribe to an aircraft’s schedule as a calendar feed from a calendar app.
- KPHX → KAPA
The iPad board: one row per aircraft, the trips and an annual inspection in the same week.
Transcript
The iPad schedule shows the whole fleet for the week of Nov 1-7, one row per aircraft. Tapping Day shows Friday, Nov 6, with N519SD KPHX → KAPA; tapping 3-Day shows Nov 6-8; tapping Week returns to Nov 1-7.
No card needed.Free for 14 days with up to 2 aircraft.
Add the rest when you subscribe.
Sky Duty runs on iPhone and iPad. Scan to get it.
Before you start
Co-founded by a working pilot
Your data is yours
Logbook export to PDF or CSV, and logbook import from CSV. Delete your account or organization in the app. Your data is never used to train AI models.
It won’t sign off maintenance. Weather is advisory.
Why this comparison matters
FL3XX and Sky Duty both run flight operations, for different jobs: FL3XX puts charter sales and quoting beside dispatch, crew and maintenance, and Sky Duty runs the operating side of a small fleet.
FL3XX says it does not replace full MRO software, and its onboarding is led by a dedicated implementation manager, in phases from data collection and configuration to training and production.
If charter quoting and Avinode requests are how your business sells, FL3XX is built for that, and Sky Duty is not.
Frequently asked questions
Is Sky Duty a good FL3XX alternative?
How much does FL3XX cost?
Does FL3XX have a free trial?
Does FL3XX run on iPhone and iPad?
Can I switch from FL3XX to Sky Duty?
See your own fleet on one board tonight
$39 per aircraft per month, unlimited users. Available on the App Store for iPhone and iPad.
Sky Duty runs on iPhone and iPad. Scan to get it.