Engine workscope review that checks every shop quote line, and every life-limited part to the lease return, before you sign
Every shop quote checked line by line, and every part checked to the lease return.
See one case, screen by screen ↓Engine workscope review is checking an engine shop visit's workscope and quote before you approve it: each module against the build goal, each life-limited part against the next removal and the lease return, each AD and service bulletin due, and each line against the shop contract. Engine Workscope Review gives that work to agents that read the quote, the records, the directives, the lease and the contract, check each other and draft cited questions to the shop; the powerplant engineer decides every finding and signs.
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An engine workscope review starts when an engine comes off wing: the shop tears it down and sends a quote by module: fixed-price restorations under the general terms agreement, time-and-materials labor, new and repaired parts, LLP replacements, over-and-above findings, test cell and handling. A widebody quote runs to millions of dollars, and the powerplant engineer has about five days to approve the workscope before the shop releases the slot and the material orders. In that time someone has to check every module against the build goal, every life-limited part against the next removal and the lease, every AD and service bulletin due at this exposure, and every line against the shop contract — with the quote PDF, the LLP status sheet, the lease and the GTA open side by side.
The money is in what slips through. A reused LLP that meets the build goal but not the lease's return minimum is found at redelivery, when the fix is a second shop visit and a spare engine on rent. Fixed-price module scope charged again as labor, handling above the contract cap, a second test cell run charged up front, a module restored beyond the build goal, a directive left out of the quote. Questions go to the shop by email, the revised quote comes back as a new PDF, and nobody re-checks every line of the revision.
Estimated split for one widebody engine shop visit quote, checked by hand and with the solution.
Six agents read, project, match and cross-check every quote; the engineer approves each question and signs.
ESN 959-412, a GEnx-1B74/75 off Corvane Airways 787-9 N815CV, came off wing on Sep 28 with 6°C of EGT margin and HPT stage 1 blade coating loss. Meridian Turbine Services sent quote QT-26-3381 Rev A at 17:52 on Oct 14: 51 lines, $8,912,400, approval asked by Monday, Oct 19. The aircraft is leased from Halvorsen Aircraft Leasing and returns on Aug 31, 2029. Here is what happens next, screen by screen, in the working solution.
Owen's day starts with two shop quotes waiting, $1.27M questioned on open quotes and $4.3M of credits agreed this year. The GEnx quote for ESN 959-412 is first: due Mon, Oct 19, 7 findings, $1,204,000 questioned and one part below the lease at return. Below it are a LEAP-1A quote from Harbor Point, a GE90 workscope the agents drafted before removal, and a CFM56 invoice for Grace in finance.
What the agents did: “Lease agent found the HPT stage 1 disk would return with 3,100 cycles; lease LA-0815 requires 5,000.”
The quote reader mapped all 51 lines to the fan and booster, HPC, combustor, HPT, LPT, accessories and whole-engine work, and seven numbered pins mark the findings on the cutaway. Beside it, the workscope agent sums up what six agents found: 2 gaps that would leave the engine short of the lease or the ETOPS standard, 5 charges to question for $1,204,000 (four to remove, and one new disk to ask about before it is scrapped), and one of its own findings withdrawn by the price checker. Owen asks follow-ups in plain words — “Why not pay the lessor instead?”, “Show the duplicate lines”, “What did the price checker withdraw?” — and every answer comes back with its sources.
The workscope agent, on paying the lessor instead: “Because the lease does not allow it: §6.4(d) says a part below 5,000 cycles ‘shall not be satisfied by any payment of compensation’.”
The HPT stage 1 disk, S/N GWN-4471, has a 15,000-cycle limit, 10,430 cycles since new and 4,570 left. Projected at 560 cycles a year from reinstall on Jan 18, 2027, it reaches the Aug 31, 2029 return with 3,100. The lease requires 5,000 at return and does not accept cash instead, yet the quote reuses the disk. Its back-to-birth trace is complete through 3 prior operators.
Replacing it now, with the HPT open, adds about $598K; leaving it means a second, HPT-only shop visit before return, estimated at $2.4M.
The workscope agent had read combustor lines 17 and 18, $64,000 each, as the same repair charged twice. The price checker read them against the teardown report: one is the outer liner, one the inner liner — two parts. It withdrew the finding, and the withdrawal stays on the record with its reason.
“Agents check each other before anything reaches you. Withdrawn findings stay on the record.”
Every finding carries its severity, module, dollar effect and the sources behind each number. F1 is the HPT stage 1 disk (+$598K). F2 is HPC teardown labor charged twice: line 14 bills 1,050 hours, $420,000, while fixed-price line 8 already includes disassembly, inspection and reassembly. Owen approves both, each becomes a drafted question, and he approves the other five in one step. He could edit any question, or reject it with a reason code.
“Proposes, cites and asks — you decide every change.”
Eight directives and bulletins are due for this serial number at this exposure. Four are in the quote, AD 2026-03-02 is met by the new HPC spool on line 9, SB 72-0377 was done at the Jun 2021 shop visit and SB 72-0420 was not adopted. SB 72-0412, the fuel nozzle upgrade Corvane's ETOPS configuration standard requires at this visit, is missing from the quote — finding F4, +$148K, and Owen has already approved the question asking the shop to add it.
The directives agent never closes a directive without a record.
Lease LA-0815 Schedule 6 is tested clause by clause. As quoted, §6.4(c) is not met — 3,100 cycles lowest against 5,000 — and §6.4(d) would need a second shop visit. With the agents' proposal, the lowest part returns with 6,620 cycles. §6.7 asks for a workscope summary to the lessor within 10 days of the quote, by Oct 24: the lease agent drafted it, and Tomas sends it to Hanne Vik at Halvorsen.
The lease agent drafts; Tomas Varga confirmed its reading of the lease on Oct 15 and sends the summary himself.
Owen sends 7 questions to Luis Navarro at Meridian in one thread. Meridian agrees to a new HPT stage 1 disk, removes the duplicate labor and the second test cell run, builds the fan and booster to minimum, adds SB 72-0412 and corrects handling to the 12% cap. On F6 it sends the inspection record: a 0.018 in. rim rub on the LPT stage 3 disk against a 0.010 in. shop-manual limit. The agents check Rev B, $8,740,400, line by line: every approved change moved, nothing else.
Workscope agent and price checker: “F6: the inspection record shows a 0.018 in. rub against a 0.010 in. limit — the replacement is justified. I recommend accepting it.”
Every finding is decided: six agreed by the shop, one justified. Owen ticks W1–W4 himself, each with the agents' evidence under it — within the build goal and the lease (lowest part 6,620 cycles at return, the lease needs 5,000), every directive due in the workscope (8 of 8), charges checked against the contract (51 lines), shop answers checked by the agents — and only then can he sign the Rev B workscope at $8,740,400. The price is above $5,000,000, so Rachel Lindqvist countersigns the same day.
“Your signature records your name, the time and what it means. It cannot be edited afterwards.”
The cost by module adds to $8,740,400 — $3,362 a cycle to the 2,600-cycle build goal, $918,000 of credits agreed, a 92-day turn time and redelivery on Jan 2, 2027. The reserve claim to Halvorsen is $7,612,000: $5,962,000, the full performance restoration reserve balance, plus $1,650,000 for three life-limited parts. Corvane pays $1,128,400. Accessories are excluded under §7.4, and the claim is due within 90 days of redelivery, by Apr 2, 2027. The claim pack is ready for Grace: 41 documents, from the signed workscope to the LLP release tags and back-to-birth packs.
The cost-record agent builds the claim pack; finance submits every claim.
The same engine shop visit, seen by four of the people who carry it — what the quote week looked like, and what it looks like now.
Six agents read, project, match and cross-check every quote; the engineer approves each question and signs.
Reads each shop quote and revision from the shop portals and email, splits it into lines with hours, rates and amounts, maps every line to its module and shop-manual task, and lists what moved between revisions.
Reads LLP status sheets and back-to-birth packs, and projects every life-limited part to the build goal and the lease return with the fleet plan's utilization; asks Technical Records for any missing document.
Finds every AD and service bulletin due at this shop visit for the serial number, including ETOPS configuration items, and checks each against the quote and the engine's records.
Reads the aircraft or engine lease — return conditions, reserves, notices — tests the workscope against each clause, and drafts the workscope summary to the lessor.
Checks every line against the shop contract — rates, handling caps, fixed-price scope, test cell terms — and reviews the workscope agent's findings before they reach a person.
Leads the review: compares each module with the build goal and the workscope planning guide, writes the findings with their sources and effect in dollars and cycles, drafts one question to the shop per approved finding and talks it through with the engineer.
Builds the shop visit cost record by module from the signed workscope, prepares the maintenance reserve claim pack against the lease's reserves, caps and exclusions, and reconciles the shop invoice against the approved workscope.
Decides and signs; the program manager countersigns. The agents propose; a named person decides.
Ask in plain words about an ESN, a line, a life-limited part or a lease clause. The agents answer with their sources, and can open the right screen or draft the next step.
Which parts on ESN 959-412 return below the lease minimum?
One, as quoted: the HPT stage 1 disk (S/N GWN-4471) returns with 3,100 cycles at Aug 31, 2029; lease LA-0815 requires 5,000 and does not accept cash. The HPC stage 1–2 spool would also be short, but the quote already replaces it (line 9).
Why is HPC line 14 a duplicate?
Line 14 charges 1,050 hours ($420,000) to take the HPC rotor apart and rebuild it, while line 8 — the fixed-price HPC restoration — already includes module disassembly, inspection and reassembly, as Exhibit B, item 2.3 of the general terms says.
Send the lessor the workscope summary for ESN 959-412
I drafted it from the agents' proposal: HPC, HPT and LPT restoration, three LLPs replaced, lowest part 6,620 cycles at return. Tomas Varga sends it — I opened the lease screen for him.
Draft the reserve claim for ESN 959-412
The claim to Halvorsen is $7,612,000 if Rev B is approved: $5,962,000 from the performance restoration reserve (the full balance) and $1,650,000 for three life-limited parts. Corvane pays $1,128,400. The pack is built once the workscope is signed.
13 screens from the working solution, on its sample data. Pick one to see it large.
The thresholds the agents work to and the workscope planning rules are settings, and every change is on the audit trail.
| Setting | Default | Choose from |
|---|---|---|
| Countersignature above | $5,000,000 | Step up or down by $500,000 |
| Flag a quote line from | $10,000 | Step up or down by $5,000; smaller variances go into one line for review |
| Warn when a part is within this of the lease minimum | 500 cycles at return | Step up or down by 100 cycles |
| Decision clock on a shop quote | 5 days | Days from receipt to a signed workscope, one day at a time |
| Shop answers due within | 2 business days | Business days after the questions are sent, one day at a time |
| Workscope planning rules | Corvane GEnx workscope planning guide, Rev 7 | Minimum, performance restoration or overhaul per module; a change is saved as a Rev 8 draft for the engine program manager |
| Roles | 6 roles | Powerplant engineer · engine program manager · lease technical manager · maintenance finance analyst · technical records · administrator |
| Notifications | 3 of 4 on | Quote decision 2 days from its clock · a shop answers · a part would return below a lease minimum · weekly summary, Monday 07:00 |
Every figure is labelled: a target the solution is built to, an estimate, a typical published result, or a proven one.
“demo” = seen in the working solution, on its sample data · “target” = the design goal, measured in the live solution · “estimated” = our estimate of where the days go · “typical” = published figures (IATA with Oliver Wyman — $2.6B of engine leasing to cover shop-visit backlogs in 2025; Oliver Wyman Global Fleet & MRO Forecast 2026–2036 — MRO $136B in 2025, engines the largest segment; IBA via Aviation Week — narrowbody engine shop visits up about 40% from 2024 to 2025). Regulations named for context: 14 CFR 121.380, Part 39 and 121.374. Corvane Airways and every person, shop, lessor, serial number, quote and lease named on this page are fictional — characters and sample data in the working solution.
Engine workscope review is checking an engine shop visit's workscope and quote before you approve it: each module against the build goal, each life-limited part against the next removal and the lease return, each AD and service bulletin due, and each line against the shop contract. Engine Workscope Review gives that work to agents that read the quote, the records, the directives, the lease and the contract, check each other and draft cited questions to the shop; the powerplant engineer decides every finding and signs.
An engine shop visit quote review starts with the quote reader, which splits the quote and every revision into lines and pins each line to the module it prices. The price checker tests each line against the general terms — rates, handling caps, fixed-price scope and test cell terms — and finds duplicates, such as labor already covered by a fixed-price module restoration. When the revised quote arrives, the agents check that only the approved changes moved.
This is life-limited parts tracking to the lease return, not just to the next removal. The records agent reads the LLP status sheet and back-to-birth packs, takes each part's life limit and cycles since new, and projects it with the fleet plan's cycles a year to the lease return date. The lease agent reads the return clauses, so a part whose stub life meets the build goal but returns below the lease minimum is caught before you sign. A what-if shows which parts cross the line if utilization changes.
In engine maintenance planning, the build goal is the life you need from the engine after the shop visit — cycles on wing to the next planned removal, with every lease condition met. The workscope agent compares each module's quoted workscope level with the build goal and your workscope planning guide, and prices options against it: shop visit cost, cost per cycle, lowest part at return, and whether a second shop visit would be needed.
Yes. The directives agent finds every AD and service bulletin due at this exposure for the serial number, including your ETOPS configuration standard, and checks each against the quote and the engine's records. A missing one becomes a finding with a one-click question to the shop, and the agent never closes a directive without a record.
Yes. Once the workscope is signed, the cost-record agent builds the shop visit cost record by module and the reserve claim against the lease's reserve balances, caps and exclusions, and later reconciles the shop's invoice against the approved workscope. Finance reviews and submits every claim.
Yes. The agents propose, cite and ask; they never change a quote or send anything to a shop, lessor or finance without a person's approval. The powerplant engineer approves, edits or rejects each finding with a reason code and signs the workscope, and above the threshold the engine program manager countersigns.
The Agentic Solution Engine builds and deploys Engine Workscope Review from your requirements and documents — your M&E system, records library, shop contracts, leases and workscope planning guide. It goes live once every quality gate has passed, and your thresholds, roles and planning rules are settings you can change.
No tail flies past an AD, and every line of the status report is proven.
1-min demoService Bulletin EvaluationEvery bulletin decided in days on the fleet’s own evidence, every tail and dollar cited.
1-min demoDeferred Defect ManagementNo aircraft flies past its MEL limit, and every fix lands on a planned overnight.
1-min demoWe'll run Engine Workscope Review on one of your own past shop visit quotes, with its LLP status sheet and lease.