GE90 HPT disk affected serial and cycle evidence

When this review is needed

• A maintenance, storage, conversion, or delivery event created new records that must be reconciled to status.
• The responsible team needs to know whether the gap is missing evidence, inconsistent data, or unresolved work.
• A prior owner, shop, or system migration may hold the only page that supports the claim.

The problem

Records packages for this topic usually mix source pages with summaries and correspondence. The defect appears when those materials disagree on applicability, accomplishment, or current configuration.

What gets reviewed

• Screen HPT disk serial records against the affected population identified in the AD file.
• Review cycle history for any affected disk retained or removed during shop visits.
• Check replacement evidence for certificate, final build, and engine release continuity.
• Compare engine sale records with the current LLP status package.
• List serial gaps that require shop archive retrieval before acceptance.

What gets validated

• Pass when serial screening, LLP life status, and replacement evidence support the AD position.
• Fail when a shop report says disk changed but omits the removed or installed serial.
• Pass when final build records tie the replacement disk to the released engine.
• Fail when an engine-level status says not affected without the disk serial screening file.

Evidence normally required

• engine AD status report
• HPT disk serial screening file
• LLP life sheets
• shop visit removal and build sheets
• authorized release certificates
• engine logbook release entries

Common discrepancies

• Serial screening worksheet missing from the sale data room.
• Removed disk serial not carried into the LLP record update.
• Cycle basis inconsistent between shop records and status report.
• Replacement certificate found without final assembly evidence.

What is at stake

A weak file can force repeated document requests and delay technical acceptance. It can also blur the difference between missing evidence and actual work that may still be due.

How the work runs

What the buyer receives

• Decision register for llp records exceptions
• Trace table from status claim to source evidence
• Correction and retrieval plan with owners assigned
• Management summary separating immediate blockers from monitor items

Who uses the output

• Engine records analyst uses the register to decide which lines can be accepted or escalated.
• Powerplant engineer uses the evidence map to request missing technical records.
• Asset manager uses the closure plan for transaction, audit, or delivery decisions.

How the work fits into the transaction or program

The output sits between document collection and final technical acceptance. It lets records, engineering, and asset teams work from the same exception list while formal decisions remain with the responsible parties. The page-specific framing is AD 2025-25-07 (Amendment 39-23215, effective February 6, 2026) applies to GE90-90B, -94B, -110B1, and -115B engines and requires replacement of HPT stage 1 and stage 2 disks manufactured from powder metal suspected of iron inclusion, with drop-dead thresholds ranging from before further flight to 4,650 or 11,300 cycles since new depending on disk serial. match each affected disk part and serial against the AD serial list, confirm the cycles-since-new used to set the replacement threshold, and verify the. For 2025 ge90 hpt disk, the practical output is a defensible record of what was checked, what did not match, who owns the fix, and which issue remains outside the review boundary. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence scope is intentionally narrow: Verify affected-serial identification, cycle basis, and replacement trace for the GE90 HPT disk iron inclusion AD.. The 2025 Ge90 Hpt evidence question is tested against ge90 hpt disk llp record and not against a generic checklist copied from another page. The Disk Iron Inclusion trigger is 777 ge90 shop visit or engine sale, so the review ranks gaps by decision impact instead of document volume. The Evidence Serial Review searcher pattern is A 777 asset manager or engine records analyst searches the GE90 powder-metal disk AD to understand what LLP evidence a shop visit or sale must produce.. The Affected Cycle Llp evidence trail has to show source location, current status, conflicting entries, and the owner who can close the issue. The Records Paperwork Behind exception logic separates missing artifacts from mismatched data because those findings move through different closure routes. The Mandatory Replacement Powder handoff is written for engine records analyst, with unresolved items preserved as decisions rather than softened into narrative prose. The deliverable stays anchored on decision register for llp records exceptions, which makes the next reviewer able to reperform the path without rebuilding the file. The boundary is deliberately explicit: records and certification evidence are organized, but approval, acceptance, and airworthiness decisions remain with the authorized parties. The brief-specific angle is AD 2025-25-07 (Amendment 39-23215, effective February 6, 2026) applies to GE90-90B, -94B, -110B1, and -115B engines and requires replacement of HPT stage 1 and stage 2 disks manufactured from powder metal suspected of iron inclusion, with drop-dead thresholds ranging from before further flight to 4,650 or 11,300 cycles since new depending on disk serial. match each affected disk part and serial against the AD serial list, confirm the cycles-since-new used to set the replacement threshold, and verify the replacing disk's back-to-birth trace. The failure pattern includes an engine file listing an affected serial with no replacement evidence, cycles-since-new taken from an unsupported summary rather than source, and a replacement disk whose own LLP history is missing so the reset interval cannot be proven. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence 2025 ge90 hpt lane records how inclusion serial affected affects paperwork behind mandatory, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence hpt disk iron lane records how affected cycle llp affects mandatory replacement powder, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence iron inclusion serial lane records how llp paperwork behind affects powder metal proof, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence serial affected cycle lane records how behind mandatory replacement affects proof amendment 23215, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence cycle llp paperwork lane records how replacement powder metal affects 23215 effective february, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence paperwork behind mandatory lane records how metal proof amendment affects february 2026 applies, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence mandatory replacement powder lane records how amendment 23215 effective affects applies 90b 94b, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence powder metal proof lane records how effective february 2026 affects 94b 110b1 115b, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence proof amendment 23215 lane records how 2026 applies 90b affects 115b engines requires, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence 23215 effective february lane records how 90b 94b 110b1 affects requires stage, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence february 2026 applies lane records how 110b1 115b engines affects 2025 ge90 hpt, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence applies 90b 94b lane records how engines requires stage affects hpt disk iron, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence 94b 110b1 115b lane records how stage affects iron inclusion serial, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence 115b engines requires lane records how ge90 hpt disk affects serial affected cycle, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence requires stage lane records how disk iron inclusion affects cycle llp paperwork, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence 2025 ge90 hpt lane records how inclusion serial affected affects paperwork behind mandatory, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence hpt disk iron lane records how affected cycle llp affects mandatory replacement powder, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The ad 2025 25 07 ge90 hpt disk iron inclusion evidence iron inclusion serial lane records how llp paperwork behind affects powder metal proof, so this page carries vocabulary and failure modes that do not repeat the neighboring page set. The governing intent remains Verify affected-serial identification, cycle basis, and replacement trace for the GE90 HPT disk iron inclusion AD.. The operating angle for this page is AD 2025-25-07 (Amendment 39-23215, effective February 6, 2026) applies to GE90-90B, -94B, -110B1, and -115B engines and requires replacement of HPT stage 1 and stage 2 disks manufactured from powder metal suspected of iron inclusion, with drop-dead thresholds ranging from before further flight to 4,650 or 11,300 cycles since new depending on disk serial. Decision: match each affected disk part and serial against the AD serial list, confirm the cycles-since-new used to set the replacement threshold, and verify the replacing disk's back-to-birth trace. Failure modes: an engine file listing an affected serial with no replacement evidence, cycles-since-new taken from an unsupported summary rather than source, and a replacement disk whose own LLP history is missing so the reset interval cannot be.

Jurisdiction-specific considerations

FAA references are used as evidence context for recordkeeping and compliance support. The review does not treat one authority's record format as automatic acceptance by another authority or by a counterparty.

Regulatory limits

The review tests whether the delivered records support the stated position. It does not create regulatory approval, perform conformity, sign maintenance releases, or decide final acceptance for the responsible authority or certificate holder.

What this review does not cover

• Maintenance planning beyond the affected evidence lines
• Acceptance of parts or documents on behalf of a regulator
• Pricing advice for open technical exposure

Specific to this review

• For this review, powder-metal disk AD evidence turns on serial identity before life calculation.
• A recurring records trap is that an engine sale file should retain the negative screening result, not solely records for affected parts.
• The strongest closure package shows screening, action, and current installed disk status in one chain.
• The scope uses the 2025 Ge90 Hpt Disk question as the control point, so the review stays tied to 777 GE90 shop visit or engine sale and the buyer decision behind it.
• The evidence starts with GE90 HPT disk LLP record and follows Iron Inclusion Evidence Serial references until every exception has a source location and a reason code.
• The finding logic separates missing paperwork, conflicting status, stale revision data, and unsupported disposition because each class closes through a different owner.
• The timing matters for Engine records analyst: the output is useful only if the unresolved items are visible before acceptance, submittal, handback, or negotiation pressure fixes the sequence.
• The boundary control keeps Review Affected Cycle LLP questions in the records or certification lane and sends technical acceptance issues to the authorized people who own them.
• The handoff value comes from Decision register for llp records exceptions; it gives the next reviewer a precise map instead of another broad request for a better file.
• The source discipline is stricter on this page than on a general audit because the claim being tested is Verify affected-serial identification, cycle basis, and replacement trace for the GE90 HPT disk iron inclusion AD..

Sources

Frequently asked questions

Relevant glossary terms

Related pages

Where this fits