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npx add-mcp 'https://165-227-136-26.sslip.io/mcp'

For helicopter MRO & operations · Offshore · SAR · HEMS · Government fleets

Justify your headcount. Pass the audit.

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, H160, S-92 and H175 in oil & gas, SAR and government service.

SUPPORTED TYPES AW139 · AW169 · AW189 · H135 · H145 · H160 · S-92A · H175

Two regulations already demand what this tool produces.

EASA PART-145 · AMC1 145.A.30(d)

The man-hour plan obligation

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.

IOGP-690 · §25C — OFFSHORE HELICOPTER OPS

The oil-company audit standard

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.

From fleet data to a defensible establishment, in minutes.

01

Workload forecast

Fleet × flight hours × check intervals → scheduled, line and defect man-hours per base. Type norms for AW139, AW169, AW189, H135, H145, H160, S-92A and H175 — every coefficient editable.

02

Rotation simulator

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.

03

Deviation alerts

Enter the month's available man-hours — the 25% significant-deviation threshold is checked automatically, with the reporting obligation spelled out.

04

Function breakdown

Headcount split exactly the way 145.A.30(d) frames it: performing, certifying, supervision, planning and compliance monitoring — with certifying-staff ratios per base.

05

Auditor-ready PDF

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.

06

Your data stays yours

The planner runs entirely in your browser. Fleet numbers, rosters and results are never uploaded — there is no server-side copy to leak.

No black box. Every number is inspectable and editable.

1. Workload: per aircraft type, intermediate and major check intervals (in flight hours) with planning man-hour norms, plus line man-hours per flight hour.
2. Non-routine: a configurable defect-rectification allowance on top of scheduled workload (default 20%).
3. Headcount: total man-hours ÷ productive hours per engineer (after leave, training, sickness, admin).
4. Coverage: minimum manning × shifts × rotation factor per base — the requirement is whichever is larger, workload or coverage.
5. Functions: supervision, planning and compliance monitoring added per Part-145 practice; certifying staff by configurable ratio.
6. Deviation: monthly available vs planned man-hours, flagged at the 25% reportable threshold.

An honest tool. Shipped coefficients are published-industry planning estimates for offshore/SAR utilisation — clearly marked as such. For an authority submission you should calibrate them with your own maintenance history, which the tool makes a 5-minute job. ManHourPlan is an advisory planning tool: it supports, and does not replace, review by your compliance monitoring manager and competent authority.

Start free. Upgrade when the audit letter arrives.

Calculator — Free

$0

• Full workload & headcount engine
• All 7 aircraft types
• 1 base · up to 5 aircraft
• Deviation threshold check
• Runs in your browser — no signup Open free calculator Done-for-you services →

Planner

$99 /mo

For a single-base MRO or small operator

• Everything in Free
• Auditor-ready PDF report (145.A.30(d) evidence)
• Saved scenarios & what-if compare
• Quarterly review workflow
• Up to 3 bases and 15 aircraft
• 1 user · email support (48h) Get Planner — $99/mo

Operator

$249 /mo

For multi-base groups, CAMOs & fleets with rotations

• Everything in Planner
• Unlimited bases and aircraft — group-wide establishment
• CSV export for finance / HR systems
• IOGP-690 §25C evidence pack for oil & gas customer audits
• Up to 5 users · priority support (12h) from an active type instructor
• Annual methodology review call Get Operator — $249/mo

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.

Straight answers.

Does my fleet data get uploaded anywhere?

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.

Are the aircraft man-hour figures OEM data?

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).

Is this a substitute for regulatory compliance?

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.

Which operations is it built for?

Helicopter MRO and operations first — offshore oil & gas, SAR, HEMS and government fleets on AW139, AW169, AW189, H135, H145, H160, S-92A and H175. The engine is type-agnostic; fixed-wing and additional types can be added via the coefficients panel.

Can I get an invoice and pay by card?

Yes — card payment with automatic Stripe invoicing is live, and crypto (SOL, USDT-TRC20) is also accepted. Email support@manhourplan.com if you need a formal quote first.

Built by someone who's staffed the hangar.

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: support@manhourplan.com.