Module
Heavy Maintenance — Cost Intelligence + Contract Architecture
Document
TK-DIAG-PREVIEW
Schema version
v0.3.0
Issued by
atas.aero / Stirling
Automated Technical Assessment Services · / Toolkit

Two questions every heavy maintenance check faces — spend and contract.

Upload your contract bundle, invoices and workscope file. The toolkit runs two diagnostics in parallel — a spend audit against your billed cost, and a contract architecture score against our maintenance-contract standard. The free Tier 01 view returns indicative ranges and a section heatmap. Higher tiers add expert review, deep-dive engagement, or full RFP / V6 procedure with a specialist procurement partner.

13 + 19
Spend generators + contract sections
~10 min
From upload to dual snapshot
4
Engagement archetypes
◆ Choose your engagement level Tier 03 splits into two archetypes — pick A, B, or both
TIER 01 FREE
Self-serve diagnostic
Indicative ranges only. Spend findings register + contract overhaul snapshot. No line-level evidence — gated to higher tiers.
TIER 02 FROM £12.5K
Expert-reviewed report
ATAS specialist validates every finding, quantifies at contracted rates, scores contract clauses. Findings Targets Workbook + advice memo.
TIER 03 · A BESPOKE
Deep-dive engagement
On-site week, sponsor pack, negotiation strategy, methodology hand-over. Live cost recovery on a current check.
◆ ATAS · via a managing partner or direct
TIER 03 · B BESPOKE
RFP procedure
V6 architecture, supplier selection, structured procurement methodology. For operators approaching contract renewal who want a structured tender.
◆ ATAS-led · specialist procurement partner
§ I
Paste your document bundle
contract · invoices · workscope

Have them as PDFs? Upload contract, invoices & workscope → for a data-pack preview — contract-architecture score and spend signals, each with a confidence score. We check it’s aircraft-maintenance material before processing, and never store the files.

◆ What to paste & how to read this — hint

Paste text, not files. Box A (contract clauses — rates, caps, handling-fee scope, audit, TAT) drives the contract score; Box B (invoice lines & totals) drives the spend findings; Box C (workscope) is optional and sharpens spend. Include the numbers.

Reading it: spend shows how many of 13 generators flagged, an indicative $ band, and a severity per finding; contract shows a weighted % with a Renegotiate / Watch / Maintain split and a section heatmap (weakest first).

Tier 01 is indicative only — candidate counts, ATA codes, source lines and specific clauses are unlocked at Tier 02. New here? Load a sample bundle · full help.

Paste the agreement / annex text — rates, caps, handling-fee scope, work-arising approval, audit rights, TAT.
Paste invoice line items / totals — labour, materials, handling, drawing fees.
Optional — paste the workscope / task summary (routine, non-routine, materials).
◆ Paste the contract (and ideally invoices) and tick consent to run · indicative Tier-01 only
§ II
What happens to your upload
4 stages · two parallel paths · ~10 min full run
01
Step 01
Read & sort
Reads PDFs, scanned documents and workbook tabs. Sets aside anything that isn’t a maintenance document (images, personal files). Every source is indexed for traceability.
— awaiting input —
02
Step 02
One standard
Reads every line of your contracts, invoices and workscopes into one common standard, tagged to ATA chapter — so spend and contract findings reconcile.
—
03
Step 03
Route to paths
Spend path runs audit / rate-card / projection. Contract path runs a contract-architecture score against our maintenance-contract standard. Both read the same evidence.
—
04
Step 04
Score & gate
Apply 13 spend generators + 19 contract sections. Watermark, gate by tier. Tier 01 sees ranges and heatmap only.
—
§ III
Dual snapshot
Tier 01 · indicative only
◆ Spend · Indicative summary — Tier 01 · indicative —
Generators returning candidates
—
of 13 spend generators
Indicative aggregate exposure
—
indicative band · not a quotation
Highest-exposure area
—
strongest signal in your bundle
◆ Spend · Findings register — · Tier 01 view
◆ Contract · Contract-architecture score — Illustrative · 19 scored sections —
Overall weighted score
—%
awaiting input
0%50%100%
—
Renegotiate
—
Watch
—
Maintain
—
Sections
Section heatmap · top sections by gap to best practice
↓ Specific clauses, priority detail and renegotiation playbook gated to Tier 02 / 03B
↓ Tier 01 — indicative ranges only · no line-level evidence · no specific clause analysis · not for commercial citation v0.3.0 · {engagement_id}
Tier-01 register · Dashboard + Spend Findings + Contract Sections + Recovery Targets · candidate lines, ATA codes, clauses & quantified targets at Tier 02
↗ Tier 02
Expert-reviewed report
An ATAS specialist reviews each spend finding, kills false positives, quantifies at your contracted rates. Contract overhaul score is detailed clause-by-clause with renegotiation playbook. Delivered as Findings Targets Workbook + advice memo.
From £12,500 per aircraft check
Request Tier 02 →
↗ Tier 03 · A
Deep-dive engagement
On-site week with operator and MRO. Sponsor pack, negotiation strategy, methodology hand-over for ongoing use. Live cost recovery on a current check, with full transition tracker and MKF. As a sub-contract via a managing partner, or directly with ATAS.
Bespoke · ~£60K–£120K per aircraft
Discuss Tier 03 · A →
↗ Tier 03 · B · ATAS-led
RFP procedure
V6 / V7 contract architecture and structured supplier selection using a structured procurement methodology. Independent benchmark, longlist → shortlist → award against our maintenance-contract standard. A lead procurement specialist drives the procurement work; ATAS provides the analytic foundation.
Bespoke · 9–12 month engagement
Discuss Tier 03 · B →

◆ Tier-03 engagements report through the Cost-Evaluation Portal — a cross-asset dashboard of savings, benchmarks and initiatives (preview available now, illustrative data).