ManHourPlan builds your Part-145 maintenance man-hour plan from fleet, utilisation and rotation data — and keeps it audit-ready with deviation alerts and quarterly reviews. Built for the operators flying AW139, AW169, AW189, H135, H145, S-92 and H175 in oil & gas, SAR and government service.
Every Part-145 organisation must maintain a maintenance man-hour plan tied to its hangar visit plan, showing it has enough staff per function — planning, performing, supervising, certifying, compliance monitoring. A >25% man-hour shortfall in a calendar month is a "significant deviation" that must be reported internally, and the plan is expected to be reviewed every 3 months. Surveyors ask for this document. Most organisations produce a stale spreadsheet.
Operators flying offshore contracts are audited by energy majors against IOGP-690. For engineering staff it caps duty at 12 hours per 24, mandates 10-hour rest and 7 days off per month, and — point 25C.5 — requires a process defining required man-hours per maintenance task, linked to maintenance planning. Fail it and the contract conversation gets very short. ManHourPlan's rotation simulator validates your roster against these limits.
Fleet × flight hours × check intervals → scheduled, line and defect man-hours per base. Type norms for AW139, AW169, AW189, H135, H145, S-92A and H175 — every coefficient editable.
Model 6/6, 2/4 (NCS), 4/4 or custom rotations per base. Validates coverage against IOGP-690 duty limits and flags single-person 24/7 shifts before an auditor does.
Enter the month's available man-hours — the 25% significant-deviation threshold is checked automatically, with the reporting obligation spelled out.
Headcount split exactly the way 145.A.30(d) frames it: performing, certifying, supervision, planning and compliance monitoring — with certifying-staff ratios per base.
One click exports fleet, assumptions, per-function establishment and deviation status as a clean document — for the surveyor, the accountable manager, or the budget fight.
The planner runs entirely in your browser. Fleet numbers, rosters and results are never uploaded — there is no server-side copy to leak.
Cancel anytime in one click from your Stripe receipt — you keep access until the end of the paid month, no questions, no lock-in. Your scenarios stay saved in your browser even after cancellation; only PDF export, saving and plan caps return to Free tier.
No. The planner is a client-side application: all computation happens in your browser, and saved scenarios live in your browser's local storage. We never see your fleet, your rosters or your results.
No — they are industry planning estimates assembled from published maintenance-planning practice for each type, and they are clearly labelled as such. Every coefficient is editable; for a formal authority submission, calibrate with your own records (the coefficients panel is built for exactly that).
No. It is an advisory planning tool that produces the analysis and documents your compliance monitoring manager needs. Final sign-off always belongs to your organisation's accountable manager and competent authority.
Helicopter MRO and operations first — offshore oil & gas, SAR, HEMS and government fleets on AW139, AW169, AW189, H135, H145, S-92A and H175. The engine is type-agnostic; fixed-wing and additional types can be added via the coefficients panel.
Yes — card payment with automatic Stripe invoicing is live, and crypto (SOL, USDT-TRC20) is also accepted. Email smartlivingcircle@gmail.com if you need a formal quote first.
ManHourPlan is built by an active AW139 / AW189 type instructor working with MTO and MRO operations across oil & gas, SAR and government fleets — the person who watches manpower spreadsheets fall apart before audits and decided to fix it properly. The methodology follows published maintenance manpower research and the regulatory frameworks (EASA Part-145, IOGP-690) your surveyors and customers actually use. Feature requests and methodology challenges are welcome: smartlivingcircle@gmail.com.