Pratt & Whitney JT8D
152 US-registered aircraft fly this program — 328 installed engines across 14 registry codes
Program snapshot(US registry)
14 registry engine codes aggregated
43 aircraft flying the JT8D left the US registry and stayed domestic since 2023 — a teardown proxy, not confirmed part-outs — at an average age of 37.3 years. 13 more were exported and left the US fleet intact.
FAA registry data, US-registered aircraft only. Deregs = domestic deregistrations — a teardown proxy that also captures re-registrations and some unflagged exports, never a confirmed part-out count. Median build year is a tails-weighted median of per-variant medians (≈). 100 of 152 active tails are registered under generic series codes rather than a specific variant, so per-variant splits are partial.
Registry codes under this program
FAA registry — as registered, variants + generic series rows
| Engine model | Active tails | Engine units | Median build yr | Deregs since ’23 | Exported | Avg age at dereg |
|---|---|---|---|---|---|---|
| JT8D seriesgeneric code | 84 | 172 | 1991 | 29 | 8 | 34.4 yr |
| JT8D-219 | 22 | 44 | 1991 | 4 | 0 | 34.5 yr |
| JT8D-9 seriesgeneric code | 9 | 24 | 1975 | 4 | 2 | 53.8 yr |
| JT8D-1 | 8 | 21 | 1969 | 3 | 0 | 33 yr |
| JT8D-17 seriesgeneric code | 7 | 16 | 1984 | 1 | 1 | 44 yr |
| JT8D-15 | 6 | 13 | 1987 | 1 | 1 | 51 yr |
| JT8D-17 | 6 | 15 | 1981 | 0 | 0 | — |
| JT8D-9A | 5 | 11 | 1972 | 0 | 0 | — |
| JT8D-217C | 2 | 4 | 1986 | 0 | 0 | — |
| JT8D-9 | 1 | 3 | 1976 | 0 | 0 | — |
| JT8D-15A | 1 | 3 | 1981 | 0 | 0 | — |
| JT8D-17A | 1 | 2 | 1979 | 0 | 0 | — |
+ 2 more registry codes covering 0 active tails (each under 1 tails).
Counts reflect the engine model exactly as registered. Registry-wide, roughly 57% of engine records name a specific variant; the rest carry generic series codes, so generic rows coexist with variant rows and per-variant figures are partial. Deregs = domestic deregistrations (a teardown proxy, not confirmed part-outs); exported aircraft left the US fleet intact.
Airframe applications
FAA registry + BTS T-100 family rollups
| Family | Tails on this program | Family US fleet | Avg fleet age | Built 15+ yrs ago | Avg cycles / yr |
|---|---|---|---|---|---|
| MD-80 | 105 | 119 | 35.2 yr | 100 | 76 |
| 727 | 24 | 35 | 48.9 yr | 26 | 24 |
| 737 | 15 | 2,751 | 13.7 yr | 1,093 | 1,182 |
“Tails on this program” counts US-registered aircraft the registry rollup maps to both the family and a JT8D engine code — an undercount, since not every tail resolves to a family. Family fleet, age, and cycles columns describe the WHOLE family across every engine option, not just JT8D-powered aircraft (cycles from BTS T-100, 2025).
Airworthiness Directive activity
FAA / EASA public regulatory data
- FAA AD 2021-22-19effective Dec 28, 2021Mixed actions
The FAA is superseding Airworthiness Directive (AD) 2011-07-02 for all Pratt & Whitney (P&W) JT8D-209, JT8D-217, JT8D-217A, JT8D-217C, and JT8D-219 model turbofan engines. AD 2011-07-02 required initial and repetitive torque inspections of the 3rd-stage and 4th-stage low- pressure turbine (LPT) blades. AD 2011-07-02 also required replacement of the LPT blade if wear limits are exceeded, replacement of the LPT- to-exhaust case bolts and nuts, and installation of crushable sleeve spacers on the bolts. This AD was prompted by a report of an MD-82 airplane, equipped with a JT8D-217C model turbofan engine, experiencing an engine surge that resulted in the fracture of the LPT blade and uncontained release of the LPT blade. This AD retains certain requirements of AD 2011-07-02, while revising the inspection thresholds and replacement intervals for the 3rd-stage and 4th-stage LPT blades. The FAA is issuing this AD to address the unsafe condition on these products.
Directives in the FAA / EASA corpus we have processed whose text names JT8D engine models — not a complete historical AD list, and text matching can include airframe directives that reference the engine. An AD is a compliance requirement that drives scheduled work on a regulator's clock — a regulatory compliance signal, not a failure prediction, and no comment on this engine's reliability.