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2. V1 for 128,300 is 143 kts.
Reduction from table -14 kts.
Reduced V1 129 kts.
3. The adjusted limit weight V1 (129 kts.), is compared to Vmcg (111 kts.).
Since it is greater skip to step 4.
Note: If the limit weight V1 was less than Vmcg, having more than 7900
feet of runway, V1 would be set to Vmcg.
4. The adjusted limit V1 (129 kts.) is compared to actual gross weight V1
(133 kts.) and the smaller (129 kts.) is used. Vr (134 kts.) and V2 (141
kts.) are obtained in the normal manner from the V Speed charts.
Answer: V1 --- 129 kts.
Vr --- 134 kts.
V2 --- 141 kts.
WARNING: Takeoff on a wet or slippery runway with anti-skid inoperative
is not authorized. Landing on a wet or slippery runway with
anti-skid inoperative is not authorized.
737 Sec. 5 Page 37
Flight Manual Continental Rev. 11/15/02 #41
>>@ Power Management Control (PMC) Inoperative
The B737-300/500 can be operated without the Performance Management
Control system provided both systems are OFF or deactivated and operating
weight limits are decreased. Additionally, Vmcg must be increased to
compensate for increased differential thrust during takeoff roll. The
ACCULOAD will apply appropriate weight decrements for PMC inoperative
and calculate an adjusted maximum takeoff weight limit. ACCULOAD will
calculate proper V Speeds for the PMC inoperative condition. In the absence of
ACCULOAD, use the procedure below.
Procedure For Departures With PMC Inoperative Without ACCULOAD:
The performance adjustments for PMC inoperative are charted below and apply
to both standard and improved climb takeoffs. Use the following procedure for
PMC off or inoperative:
1. Determine the normal runway limit and climb limit weights using the
Runway Analysis data.
2. Determine the appropriate weight corrections from the PMC OFF or
INOPERATIVE ADJUSTMENTS chart.
3. Subtract these weight corrections from the normal takeoff runway and
climb limit weights.
4. Compare the adjusted runway limit and climb limit weights. The lesser of
the two is the maximum allowable takeoff weight (PMC inoperative).
Actual weight must be equal to or less than this limit weight.
5. Determine Vmcg from the QRH or Flight Manual. Add the speed
adjustment from the chart to the Vmcg. This becomes the adjusted Vmcg.
6. Compare this adjusted Vmcg to V1, for the actual weight and set V1 equal to
the greater of the two.
7. Determine Vr and V2 in the normal manner.
8. If the FMC is inoperative, determine the takeoff power setting from the
Max Takeoff % N1 - PMC OFF chart.
Sec. 5 Page 38 737
Rev. 11/15/02 #41 Continental Flight Manual
PMC OFF or Inoperative Example (No ACCULOAD)
Aircraft ---------------------- 303
Airport Elevation----------- 200 ft.
Wind------------------------- Calm
Temperature ---------------- 4°C
Flap Setting ----------------- 5 Flaps
PMC------------------------- Inoperative
FMC------------------------- Inoperative
Actual Weight -------------- 110,000 lbs.
1. From the Runway Analysis data, the Runway Limit Weight is found to be
137,800 lbs. and the Climb Limit is 129,500.
2. Runway Limit Weight correction is -1,100 lbs. and the Climb Limit
correction is -1,425 lbs.
3. Subtract the corrections.
Runway Limit Climb Limit
137,800 lbs. 129,500 lbs.
-1,100 lbs. -1,425 lbs.
136,700 lbs. 128,075 lbs.
4. The Climb Limit of 128,075 lbs. is the limiting weight. The actual aircraft
weight (110,000 lbs.) is below this limit, so takeoff is allowed.
5. Vmcg for the actual weight of 110,000 lbs. 111 kts.
Correction + 6 kts.
Adjusted Vmcg 117 kts.
6. V1 for the actual weight is 130 kts. It is greater than the adjusted Vmcg of
117 kts. so V1 will be set at 130 kts.
7. Vr and V2 are unaffected at 131 kts. and 139 kts.
8. The Maximum Takeoff % N1 is read from the MAX TAKEOFF % N1
chart:
BLEEDS ON--------------- 90.5% N1
BLEEDS OFF-------------- 91.4% N1
737 Sec. 5 Page 39
Flight Manual Continental Rev. 11/15/02 #41
>> PMC OFF or INOPERATIVE PERFORMANCE ADJUSTMENTS
Altitude Weight Decrement, LB V1(mcg)
FT. Temp °C Runway Limit Climb Limit Adjustment, KT.
BELOW ABOVE 21 3,200 5,625
5000 21 & BELOW 1,100 1,425 +6
5000 & ABOVE 21 3,325 5,650
ABOVE 21 & BELOW 1,725 2,050 +4
@ PMC OFF or INOPERATIVE PERFORMANCE ADJUSTMENTS
Altitude Weight Decrement, LB V1(mcg)
FT. Temp °C Runway Limit Climb Limit Adjustment, KT.
3000 & ABOVE 27 300 300
BELOW 27 & BELOW 1,000 1,000 +6
ABOVE ABOVE 27 2,200 2,000 +4
3000 27 & BELOW 2,400 2,400 +3
Sec. 5 Page 40 737
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