McDonnell Douglas MD-90

6,743 parts applicable to this airframe — narrowbody

Part Number	Description	Manufacturer	Airframe	ATA	Category	Status
3924809503N	LONGERON	DOUG	DC-9 DC-9-50+2	53	Structures	OEM
59101573	DOUBLER	DOUG	DC-9 DC-9-50+3	52	Structures	OEM
591142923	LONGERON	DOUG	DC-9 DC-9-50+4	53	Structures	OEM
59131951	DOOR FRAME	DOUG	DC-9 DC-9-50+4	52	Structures	OEM
A5A70853	INTERCOSTAL	DOUG	DC-9 DC-10+4	53	Structures	OEM
ACA73714	FLOOR PANEL	DOUG	DC-9 DC-10+4	53	Interior / Furnishings	OEM
ADA320915	FLOOR PANEL	Boeing	DC-9 DC-10+3	53	Interior / Furnishings	OEM
ADA755616	FLOOR PANEL	Boeing	DC-9 DC-10+3	53	Interior / Furnishings	OEM
ADA775373	SUPPORT CHANNEL	Airbus	DC-9 DC-10+4	53	Structures	OEM
ADA834531	FLOOR PANEL	Boeing	DC-9 DC-10+4	53	Interior / Furnishings	OEM
ADA837842	FLOOR PANEL	Boeing	DC-9 DC-10+4	53	Interior / Furnishings	OEM
AEA018354	FLOOR PANEL	DOUG	DC-9 DC-10+4	53	Interior / Furnishings	OEM
AEA743517	FLOOR PANEL	DOUG	DC-9 DC-10+4	53	Interior / Furnishings	OEM
AEU311400C	FLOOR PANEL	DOUG	DC-9 DC-10+4	53	Interior / Furnishings	OEM
AFA31685	FLOOR SUPPORT	DOUG	DC-9 DC-10+4	53	Structures	OEM
AFA716919	DOUBLER	DOUG	DC-9 DC-10+4	53	Structures	OEM
AFA71699	DOUBLER	DOUG	DC-9 DC-10+4	53	Structures	OEM
AFA72998	FLOOR SUPPORT	DOUG	DC-9 DC-10+3	53	Structures	OEM
AFA74337	SEAT TRACK	DOUG	DC-9 DC-10+3	53	Interior / Furnishings	OEM
AFA835919	FLOOR SUPPORT	DOUG	DC-9 DC-10+4	53	Structures	OEM
AGA7024507	LONGERON	DOUG	DC-9 DC-10+4	53	Structures	OEM
AGA7439	FLOOR PANEL	Boeing	DC-9 DC-10+4	53	Interior / Furnishings	OEM
AKG75001	FRAME	DOUG	DC-9 DC-10+4	53	Structures	OEM
ALC705219	TEE FITTING	DOUG	DC-9 DC-10-30F+3	55	Consumables / Hardware	OEM
ARB292319	FORMER	DOUG	DC-9 DC-10+3	57	Structures	OEM
ARC0502506	HINGE BRACKET	DOUG	DC-9 MD-11+3	57	Structures	OEM
ARC22351	SUPPORT BRACKET	DOUG	DC-9 DC-10+4	57	Structures	OEM
B53201640	FLOOR PANEL	DOUG	DC-9 DC-10+3	53	Interior / Furnishings	OEM
MP4929148	SEAT TRACK	DOUG	DC-9 DC-10+3	53	Interior / Furnishings	OEM
S00098-16-40	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-16-88	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-16-94	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-10	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-11	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-14	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-15	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-17	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-20	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-28	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-32	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-40	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-49	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-52	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-55	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-56	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-7	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-82	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-94	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S00098-17-96	Spacer-Insulation	—	DC-9-50 MD-81+5	56	—	OEM
S27779224	LONGERON	DOUG	DC-9 DC-9-50+4	53	Structures	OEM

Top Replacement-Prone Parts(7)

From FAA SDR — directional buying signal, not a failure rate

Part #	Description	ATA	Propensity	SDRs	Confidence
ARC0502506	HINGE BRACKET	57	100%*	27	medium
59516395001	BUNGEE CYLINDER	32	100%	24	medium
37723745503	SHUTOFF VALVE	27	100%	20	medium
59131951	DOOR FRAME	52	100%*	20	medium
59101573	DOUBLER	52	100%*	18	medium
39567851	RELEASE LINK	32	96%	56	high
59164605509	SELECTOR VALVE	32	95%	22	medium

* Structural ATA chapters use FAA K-code change rate. Verb-based propensity is suppressed there because "REPAIRED" in the SDR text usually refers to the airframe being repaired around the part.