d. The applicant may choose to not disassemble and inspect the engine after completion of the 150-hour endurance test and prior to starting the supplemental test under § 33.87(f). In this case, the applicant must perform the teardown inspection under § 33.93(a) at the end of the 2-hour supplemental test.
e. The applicant should document in the test report the component and engine part deterioration during the test under § 33.87(f). Such deterioration should not indicate a potentially hazardous condition for the engine. In addition to the damage that is readily visible, the applicant should detect and assess damage that is not visible. Such non-visible damage may include the effects of creep, stress rupture, metallurgical effects, or life usage. The applicant should consider this overall evaluation when defining and justifying the inspections and mandatory maintenance actions in the ICA. The ICA should include means to proper ly identify these component conditions, and should define appropriate maintenance actions for maintaining the continued airworthiness of the engine.
Appendix 1. Graphic Profiles of Endurance Test Schedules
1. Engines other than certain rotorcraft engines, § 33.87(b).
150-Hour Endurance Test Cycles 1-15 Figure 1
150-Hour Endurance Test Cycles 16-25 Figure 2
2. Rotorcraft engines with a 30-minute OEI power rating, § 33.87(c).
150-Hour Endurance Test Cycles 1-15 Figure 3
150-Hour Endurance Test Cycles 16-25 Figure 4
3. Rotorcraft engines with a continuous OEI rating, § 33.87(d).
150-Hour Endurance Test Cycles 1-15 Figure 5
150-Hour Endurance Test Cycles 16-25 Figure 6
4. Rotorcraft engines with a 2½ OEI rating, § 33.87(e).
a. § 33.87(b) and § 33.87(e)
150-Hour Endurance Test Cycles 1-15 Figure 7
150-Hour Endurance Test Cycles 16-25 Figure 8
b. § 33.87(c) and § 33.87(e)
150-Hour Endurance Test Cycles 1-25 Figure 9
c. § 33.87(d) and § 33.87(e)
150-Hour Endurance Test Cycles 1-15 Figure 10
150-Hour Endurance Test Cycles 16-25 Figure 11
5. Rotorcraft engines with 30-second and 2-minute OEI ratings, § 33.87(f).
2-Hour Supplemental Endurance Test, Cycle 1 of 4 Figure 12
2-Hour Supplemental Endurance Test, Cycles 2 through 4 Figure 13
A1-1
Figure 1. § 33.87(b), 150-Hour Endurance Test Cycles 1-15 03/09/15 Takeoff - Maximum - continuous A1-2 1/2 min.• -4 1/2 min.
Idle - $ le 5 min.
3 5 1/2 AC 33.87-1A Time ~ Hours
Figure 2. § 33.87(b), 150-Hour Endurance Test Cycles 16-25 03/09/15 Takeoff -
• 30 min.
Maximum - continuous A1-3 1/2 min.• -4 1/2 min.
Idle - → * 5 min.
1 11/2 5 1/2 AC 33.87-1A Time ~ Hours
Figure 3. § 33.87(c), 150-Hour Endurance Test Cycles 1-15 for Rotorcraft Engine with 30-Minute OEI Power Rating 30 Minute OEI A1-4 Pow er Idle Takeoff Maxim um Continuous 5 min.
30 min.
1/2 min.
4 1/2 min.
5 min.
0 1 2.5 3 5.5 6 Time ~ Hours 03/09/15 AC 33.87-1A
Figure 4. § 33.87(c), 150-Hour Endurance Test Cycles 16-25 for Rotorcraft Engine with 30-Minute OEI Power Rating 30 Minute OEI Pow er Idle Takeoff Maxim um Continuous 5 min.
1/2 min.
4 1/2 min.
5 min.
30 min.
30 min.
A1-5 0 1 2.5 3 5.5 6 Time ~ Hours 03/09/15 AC 33.87-1A
Figure 5. § 33.87(d), 150-Hour Endurance Test Cycles 1-15 for Rotorcraft Engine with Continuous OEI Power Rating A1-6
-4 1/2 min.
1/2 min.- • Figure 6. § 33.87(d), 150-Hour Endurance Test Cycles 16-25 for Rotorcraft Engine with Continuous OEI Power Rating • 1 hr. † 11/2 21/2 31/2 Time ~ Hours
• *- 5 min.
Continuous OEI- Takeoff - Maximum - continuous Idle - A1-7
Figure 7. § 33.87(e), 150-Hour Endurance Test Cycles 1-15 for Rotorcraft Engine with Rated 2 ½ Minute OEI Power Rating A1-8
Figure 8. § 33.87(e), 150-Hour Endurance Test Cycles 16-25 for Rotorcraft Engine with Rated 2 ½ Minute OEI Power Rating *9 applications @ TO One last application in 25 cycles 1/2 min. -4 1/2 min.
Time ~ Hours
- +745 min. * * 30 min.
1 1 1/2
• la- 5 min.
2 ½ - min. OEI - Takeoff - Maximum - continuous Idle - A1-9
-4 1/2 min.
for Rotorcraft Engine with Rated 2 ½ Minute and 30-Minute OEI Power Rating 5 1/2 Figure 9. § 33.87(e), 150-Hour Endurance Test Cycles 1-25 *24 applications at 30 min. OEI One last application at 2 ½ - min. OEI 1/2 min.• 3 1/2 Time ~ Hours *-5 min. * mur 1 1 1/2
• la-5 min.
2 ½ - min. OEI - 30 Minute OEI - Takeoff - Maximum - continuous Idle - A1-10
-4 1/2 min.
Figure 10. § 33.87(e), 150-Hour Endurance Test Cycles 1-15 for Rotorcraft Engine with Rated 2 ½ Minute and Continuous OEI Power Rating 1/2 min. 5 1/2 + 1 hr. 1 11/2 21/2 31/2 Time ~ Hours → -2½ min → 4-5 min.
2 ½-min. OEI - Continuous OEI- Takeoff - - Maximum - continuous Idle - A1-11