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A mount yoke assembly comprises a first main hanger bracket and a first anchor bracket. The first main hanger bracket includes a first receiving portion for a first auxiliary power unit (APU) mount with first and second hanger arms. The first hanger arm includes a first hanger flange extending proxi

A mount yoke assembly comprises a first main hanger bracket and a first anchor bracket. The first main hanger bracket includes a first receiving portion for a first auxiliary power unit (APU) mount with first and second hanger arms. The first hanger arm includes a first hanger flange extending proximate a distal end of the first hanger arm. The first anchor bracket includes a first plurality of anchor holes and a first anchor flange. The first plurality of anchor holes are disposed substantially along a length of the first anchor bracket for securing the mount yoke assembly to a component of an APU assembly. The first anchor flange extends from the first anchor bracket for hingeably securing the first anchor bracket to the first main hanger bracket.

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1. A mount yoke assembly comprising: a first main hanger bracket including a first receiving portion for a first auxiliary power unit (APU) mount, a first hanger arm, a second hanger arm, and at least one hinge portion proximate a distal end of the first or second hanger arms; andat least one elonga

1. A mount yoke assembly comprising: a first main hanger bracket including a first receiving portion for a first auxiliary power unit (APU) mount, a first hanger arm, a second hanger arm, and at least one hinge portion proximate a distal end of the first or second hanger arms; andat least one elongated anchor bracket including a plurality of anchor holes and at least one anchor flange, the plurality of anchor holes disposed along a length of the at least one elongated anchor bracket for securing the mount yoke assembly to at least one component of an APU assembly, and the anchor flange extending from the at least one anchor bracket for hingeably securing the at least one anchor bracket to the at least one hinge portion of the first main hanger bracket;wherein the at least one component comprises a gearbox housing having a plurality of yoke connections disposed around a perimeter of the gearbox housing; andwherein the at least one anchor bracket is secured to the perimeter of the gearbox housing with all of the yoke connections fastened to corresponding ones of said plurality of anchor holes. 2. The mount yoke assembly of claim 1, wherein the at least one hinge portion comprises a first hanger flange and a second hanger flange adjacent and substantially parallel to the first hanger flange defining a region between the first and second hanger flanges for receiving the at least one anchor flange. 3. The mount yoke assembly of claim 1, wherein the first main hanger bracket includes a first hinge portion proximate a distal end of the first hanger arm, and a second hinge portion proximate a distal end of the second hanger arm. 4. The mount yoke assembly of claim 1, further comprising a second main hanger bracket including a second receiving portion for a second auxiliary power unit (APU) mount, a third hanger arm, and a fourth hanger arm. 5. The mount yoke assembly of claim 4, wherein the first elongated anchor bracket includes a second anchor flange for hingeably securing the first anchor bracket to a third hinge portion proximate a distal end of the third hanger arm on the second main hanger bracket. 6. The mount yoke assembly of claim 1, wherein: the at least one elongated anchor bracket includes a first elongated anchor bracket and a second elongated anchor bracket each including at least one anchor flange; andthe plurality of anchor holes includes a first set of anchor holes disposed along a length of the first elongated anchor bracket, and a second set of anchor holes disposed along a length of the second elongated anchor bracket, such that the first and second elongated anchor brackets are securable to the corresponding ones of the plurality of yoke connections for securing the mount yoke assembly to the at least one component of the APU assembly. 7. The mount yoke assembly of claim 6, wherein the at least one anchor flange is disposed in a location on the second elongated anchor bracket for hingeably securing the second elongated anchor bracket to the first main hanger bracket. 8. The mount yoke assembly of claim 6, wherein the at least one anchor flange is disposed in a location on the second elongated anchor bracket for hingeably securing the second elongated anchor bracket to a second main hanger bracket, the second main hanger bracket including a second receiving portion for a second auxiliary power unit (APU) mount, a third hanger arm, and a fourth hanger arm. 9. The mount yoke assembly of claim 1, wherein the gearbox housing is manufactured from an aluminum alloy. 10. The mount yoke assembly of claim 1, wherein the first main hanger bracket and the at least one elongated anchor bracket are formed from one of: an austenitic steel or a titanium alloy. 11. An auxiliary power unit (APU) mount assembly comprising: a first APU mount;a strut for linking the first APU mount to a rigid structure;a first main hanger bracket including a first hanger arm, a second hanger arm, a first hinge portion proximate a distal end of the first hanger arm, and a first receiving portion for removably securing the first APU mount to the first main hanger bracket;a first elongated anchor bracket including a first plurality of anchor holes and at least one first anchor flange, the first plurality of anchor holes disposed along a length of the first elongated anchor bracket for securing the auxiliary power unit (APU) mount assembly to a gearbox housing, the at least one first anchor flange hingeably securing the first elongated anchor bracket to the first hinge portion of the first main hanger bracket; anda second elongated anchor bracket including a second plurality of anchor holes and at least one second anchor flange, the second plurality of anchor holes disposed along a length of the second elongated anchor bracket for securing the auxiliary power unit (APU) mount assembly to the gearbox housing:wherein the gearbox housing has a plurality of yoke connections disposed around a perimeter of the aearbox housing, andwherein the first and second anchor brackets are each secured to the perimeter of the gearbox housing with all of the yoke connections fastened to corresponding ones of said first and second pluralities of anchor holes. 12. The APU mount assembly of claim 11, wherein the gearbox housing is manufactured from an aluminum alloy. 13. The APU mount assembly of claim 11, wherein at least some of said plurality of connections disposed around the perimeter of the gearbox housing can withstand fire of 2000° F. for at least 15 minutes. 14. The APU mount assembly of claim 11 wherein the at least one second anchor flange hingeably secures the second anchor bracket to the first main hanger bracket.