PA-44-180 Seminole — Performance Calculator

⟶ ATMOSPHERIC INPUT

STEP 01

Source · METAR

Paste raw METAR from ForeFlight / AWC · auto-parses

ICAO auto-fetch

— paste METAR above, or fetch by ICAO —

Or · Manual Entry

Field Elev ft

Altimeter inHg

OAT at Field

Wind ddd/ss[Gss]

Cruise Plan

Cruise Alt MSL · ft

Course/Track ° true

Computed Atmosphere

Field PA

—ft

Field DA

—ft

ISA Dev

—°C

Cruise PA

—ft

Cruise DA

—ft

Cruise OAT

—°C

Head/Tail

—kt

Crosswind

—kt

Aircraft Weight

Flight Weight

3600lb 1633 kg

280030003200 340036003800↑

✓ within MTOW 3800 lb

Flight Profile

Climb Mode all 88 KIAS · full throttle 2700

Cruise % Power

Cruise RPM

Cruise Mixture

Glidepath ° (3.0 std)

Descent Speed

Descent FF gph total

▸ Data sources & digitization methods

• Fig 5-19 Climb AEO Gear Up · 2-panel nomograph digitized: 13 PA curves (SL–12k) + 6-line weight fan (2800–3800 lb) · RANSAC quad fits, rms ≤ 1.1 px · example check 1495 vs 1505 fpm (−0.7%)
• Fig 5-17 Climb AEO Gear Down · same method · 1357 vs 1360 fpm (−0.2%)
• Fig 5-21 Climb OEI · 10 PA curves (SL–9k) · 287 vs 285 fpm (+0.7%) · SL/ISA/3800: 208 fpm (pub. ~217)
• Fig 5-27 Speed Power · 7 PA curves (SL–12k, 2000-ft) + 6 fan lines {55,65,75}%×{econ,perf} · 55% perf @5500/−2°C: 140.7 vs 140 KTAS
• Fig 5-25 Fuel & Power Table · OCR-transcribed MP by %×RPM×PA incl. full-throttle limits · FF 8.7/10.2/11.7 gph per engine (perf)
• Fig 5-3 Airspeed Cal · FLAPS UP curve digitized (13 anchors, IAS 60–180)
• Climb FF · POH §5.5 example: 2.2 gal / 3.6 min = 36.7 gph total
• Weight interp linear across fan; OAT quad per PA curve, ±12°C bounded extension; PA linear between curves.

Source · PA-44-180 POH Report VB-2636 · Nov 3 2016, rev Dec 15 2017

⟶ PERFORMANCE OUTPUT

STEP 02

◀ CLIMB

AEO · 88 KIAS · GEAR UP

Climb TAS

POH 5-3 · 88 KIAS→CAS→TAS at midpoint DA

—kt

Climb Fuel Flow

POH §5.5 ex · Fig 5-23 · full throttle · full rich · both engines

—gph

Climb Rate

POH 5-19 · at midpoint PA/OAT · weight-corrected

—fpm

Ground Speed

—kt

Time to Climb

—min

Distance

—NM

◀ OEI · SINGLE ENGINE

POH 5-21 · 5° BANK TWD OPER ENG · PROP FEATHERED · GEAR UP

OEI Climb @ Field

at field PA/OAT · current weight

—fpm

OEI Climb @ Cruise

at cruise PA/OAT · current weight

—fpm

OEI Service Ceiling

PA where OEI ROC = 50 fpm · current ISA dev & weight

—ft

Vmca

56KIAS

Vxse

82KIAS

Vyse

88KIAS

◀ CRUISE

65% · 2400 RPM · Econ

Cruise TAS

POH 5-27 · at cruise PA & OAT · 3800 lb chart wt

—kt

Cruise Fuel Flow

POH 5-25/5-27 · both engines total

—gph

Manifold Pressure

POH 5-25 · at cruise PA · ISA-corrected ±1%/8°C

—inHg

Ground Speed

—kt

◀ DESCENT

Flaps UP · 3.0° glidepath · cruise → field

Descent TAS

POH 5-3 · at midpoint DA

—kt

Descent Fuel Flow

User input · low cruise / partial throttle · both engines

—gph

Descent Rate

ROD = GS × (6076.12/60) × tan(γ) · γ=3.0°

—fpm

Ground Speed

—kt

Time to Descend

—min

TOD from Field

—NM

◀ TAKEOFF DISTANCE

SHORT FIELD · FLAPS 0° · 2700 RPM FULL THROTTLE · paved level dry

Ground Roll

POH Fig 5-13 · field PA/OAT · weight + wind corrected

—ft

Over 50 ft Obstacle

POH Fig 5-15 · field PA/OAT · weight + wind corrected

—ft

Accelerate–Stop

POH Fig 5-11 · abort at Vr · max braking · flaps 0°

—ft

Rotate

—KIAS

50 ft Barrier

—KIAS

Wind Used

—kt

◀ LANDING DISTANCE

SHORT FIELD · FLAPS 40° · FULL STALL · MAX BRAKING · paved level dry

Over 50 ft Obstacle

POH Fig 5-35 · field PA/OAT · weight + wind corrected

—ft

Ground Roll

POH Fig 5-37 · field PA/OAT · weight + wind corrected

—ft

Approach Speed

—KIAS

Wind Used

—kt

Wind Note

—

▸ FOREFLIGHT PERFORMANCE PROFILE

Clb TAS

—

Clb FF

—

Clb FPM

—

Crz TAS

—

Crz FF

—

Des TAS

—

Des FF

—

Des FPM

—